### Technothlon Previous Question Papers-Juniors 2014

#### Below is the Technothlon 2014 question paper and for 2015 Question paper Click here

Hangman

It is a leisure period in Rohit’s school and he decides to play the word-guessing game,HANGMAN, with his friend Revanth.

The rules of the game are:
→ Rohit thinks of a word and tells Revanth the number of letters in the word.
→ Revanth has to guess the letters in the word.
→ At most, Revanth can guess incorrectly 7 times.
→ If he guesses all the letters before getting 7 incorrect guesses, Revanth wins.
→ Otherwise, Rohit wins.

Rohit thinks of an 8-letter word. He further gives Revanth a hint as: “If you guess correctly every time, you can win the game with 6 guesses.”
Revanth starts guessing alphabetically but loses. Among all his guesses, he could get only 2 guesses correct, 1 vowel and 1 consonant.

Question 1

Which of these vowels is definitely NOT present in the word?
A) A (B) E (C) I (D) O

Rohit plays the same game with another friend Vasavi, thinking of the same word again.Vasavi’s strategy is that she guesses all the vowels first and then the consonants, alphabetically.However, she loses and her last incorrect guess was G.

Question 2

The number of distinct vowels and consonants in the word are, respectively –

A) 1,5 (B) 2,4 (C) 3,3 (D) 3,4

Question 3

The following are pairs of words in which the first word CAN and the second CANNOT be the word to be guessed. Based on your observation of the games, which of these is the only correct pair?

A) CARPETED ; ACTUALLY
B) TERMINUS ; CHARCOAL
C) OVERDOSE ; REOPENED
D) REOPENED ; CHARCOAL

Coded&Folded

There are 7 folders in a drive. Each folder has a certain number of sub-folders in it.The names of the folders have been coded according to some rules. Each folder has a single word name. The coding has been done such that each letter has been replaced by a unique letter or number according to the code.The coded names of the folders are:

ZORZ
ZIZYRZ
HSIR1K
OV1LM
ZH1Z
JFZIP
YLHLM

The names of the folders have a relation with the number of subfolders in it as follows (therules are placed according to decreasing order of priority. If two rules clash for a folder the rule mentioned with higher priority will hold). They are
→ Each folder whose name starts with A and ends with A has four sub folders in it.
→ Every folder has at least two subfolders in it.
→ The number of subfolders in a folder with a name five letters long has to be equal to its position among the folders when arranged alphabetically. (position from top)
→ The folder with a name that consists of odd number of letters has the least numbers of subfolders possible.
→ If any folder is still left, the number of subfolders in it will be equal to the number of folders left for this step.

In order to crack the code, some random words and their coded versions have been given.Crack it and answer the questions that follow. You have to match the word with its code and then crack the code.
Words
CODED Version(not arranged corresponding to their words)-
PROOVI, YIVZW, JFRXP, KR33Z, V1RMV1

Question 4

What is the name of the folder that has the highest number of subfolders in it (Coded Name)?
A) HSIR1K B) JFZIP C) ZORZ D) YLHLM

Question 5

According to the number of subfolders in a folder, how many folders we have if the criteria for being a folder is to have 4 or more subfolders in it?

A) 2 B) 4 C) 6 D) 7

Sliding

Aparna,mother of Arunjyothi gives her a big box of chocolates. However, before handing over the box to Arunjyothi, Aparna asks her to solve the Sliding Coins puzzle.Sliding coins is a puzzle in which an arrangement of coins is rearranged to another arrangement by sliding one coin at a time.The following are the rules according to which
the rearrangement has to be done.

→ All coins are of the same size and shape, i.e., circular
→ All coins lie in a plane and cannot be kept one over the other.
→ A move involves sliding a coin to a new position that touches at least two other coins without disturbing any other coin during its motion.
Here is the puzzle which Arunjyothi has to solve.Can you help her to rearrange thearrangement at the left to that at the right given in the questions that follow?

Question 6

How many minimum number of moves are required to complete the task?

A) 6 (B) 7 (C) 9 (D) None of these

Question 7

How many minimum number of moves are required to complete the task?

A) 6 (B) 5 (C) 8 (D) None of these

Question 8

Consider a Rubik’s (3x3x3) cube with its faces having the colors green, blue, orange,yellow, red and pink such that
→ Blue is adjacent to green but not to yellow
→ Green is adjacent to red but not to orange
It is known that some of the small cubes of the Rubik’s cube are defective. Here are some clues to identify them.
A number is mentioned on some of the cubes. This number implies the number of defective cubes among the cubes touching the cube on which the number is written. (For example:number of cubes touching center cube of the entire Rubik’s cube is 26)
So here are the faces of Rubik’s cube with numbers on some of the cubes.

Find out the number of defective pieces?
A) 8 (B) 12 (C)16 (D)9

Question 9

Let Technometics be an arithmetic in which there are just 5 digits.
0 may represent 0 or 5
1 may represent 1 or 6
2 may represent 2 or 7
3 may represent 3 or 8 and
4 may represent 4 or 9.
For example- If 1430 is a number in Technometics, it can denote 16 different numbers of normal number system out of which some are 6480, 1935, 6980…. or 1485. But a number in normal number system can have only 1 Technometical representation.In a book of Technometics, Sweta finds a question which said,“Given (1041)² = 2324131 and (2221)² = 2201121, find the Technometical representation of B-A where A is the normal representation of 1041 and B is the normal representation of 2221.”Help Sweta find the answer.

Question 10

There are 5 persons who are trapped in 5 different elevators. There are 49 floors in the building. The 5 persons are respectively on the 17th, 26th, 20th, 19th, 31st floors. The elevator doors open only when all the elevators are between 21st and 25th floor in descending order. There are 2 buttons +8 and -13 that will be activated only when 2 elevators are selected together. The person on the 19th floor decides to take charge and get all
of them out.What is the minimum number of moves in which he can accomplish the target?

A) 10 (B) 12 (C) 14 (D) 16

Question 11

There are 16 secret agents who each know a different piece of secret information. They can telephone each other and exchange all the information they know. After the telephone call, they both know everything that either of them knew before the call.What is the minimum number of telephone calls required so that all of them know everything?

A) 28 (B) 53 (C) 120 (D) None of these

Question 12

Aditya while browsing the internet, searching for different types of cipher methods landed upon the De_cipher Pyramid methodology where to encode characters, they are written in the form of a downward pyramid in such a way that the first level contains even number of characters and each level contains 1 character less than previous level. The Pyramid need not be complete up to the tip but its each level should be complete.Then, two diagonal
lines are drawn from the midpoint of first level of pyramid splitting it into three parts ( not necessarily containing same number of characters) and the numbers are interchanged as shown.
Pyramid for Numbers (1 to 9)
6452 = 6173

Similarly, a pyramid satisfying the given conditions can be drawn for Alphabets, which can then be used to encode characters. Now, Aditya has to decode this message using the same.
HEEOFQDE QI LIBOF
How many consonants are there in the message that Aditya has decoded?

Seven Blindfolded prisoners are pushed onto a hanging platform, which is open at both the ends. Below, there is a large pool of volcanic lava which is hot enough to instantly kill upon contact. The metal surface of the platform is steaming hot, so the prisoners must constantly walk at a minimum speed of 0.5m/s, to ensure that their legs are not burnt. Two prisoners walking in opposite directions, upon collision will reverse direction but continue to walk at the same speed. It is obvious that eventually all of them will fall off the platform. The platform is 11m long, and the initial positions of the prisoners are as shown in the figure, but their initial directions (i.e. left or right) may be different Following are some of the prisoners’ thoughts during the last moments of their life:

Question 13

Clearly, the total time taken for all the prisoners to fall off the platform depends on the initial orientation of each of the prisoners. Prisoner A notices that if they orient themselves in a particular manner, the total time can be maximized.
What is the maximum possible total time?

A) 11 (B) 13 (C) 17 (D) None of these

Question 14

Prisoner B (the one with the bald head) is of the greedy kind, and thinks only for himself.The time taken for prisoner B to fall off the platform depends not only on his initial orientation but also on the initial orientation of the rest of the prisoners.

What is the maximum time for which Prisoner B can stay alive?
A) 11 (B) 13 (C) 17 (D) None of these

Question 15

Prisoner C on the other hand is an accomplished mathematician. He is not worried by any of these “worldly” issues. Rather, he would like to spend the last few minutes of his life solving an interesting math problem. His favourite number is 13, and he would like to find out how many distinct initial orientations of prisoners would lead to a total of 13 collisions before all of them fall off.

What is the answer to this problem?

A) 0 (B) 2 (C) 3 (D) 1

Tapan had recently read the novel ‘Angels and Demons’ and he was vastly impressed by the ancient brotherhood of Illuminati, a secret cult who believe “Science is the new God.”Being an enthusiast of Science, he researched about the organization in a hope to join it and was able to track their roots in modern-day Germany. He mailed to the Master Sabazius and Sabazius replied with a set of tasks for Tapan’s initiation into the brotherhood.

The Illuminati consider the numbers 11, 13 and 33 as sacred. Sabazius has presented Tapan with 11 cards (numbered 1 to 11) each having a unique positive integer, and the sum of numbers on all the cards equals 3313. The first 10 cards have numbers forming an increasing sequence, and the 11th card has a number which is greater than the number on the 10th card by n.
To guess the sequence, Sabazius wrote: The world is about duality. To become an Illuminatus, you must be twice the man you are now.To find n, Tapan is posed with the following statement: n is the largest 3-digit number that
is a fifth power.Tapan must choose 3 cards among the 11, in such a way that the numbers on the cards chosen add up to 1333. There is only one way this can be done.

Question 16

What is the sum of the card numbers required to get the sum as 1333? (E.g. if cards 2,4,5 are required, answer should be 11.)

A) 24 (B) 18 (C) 16 (D) 10

The Illuminati cult has a total of n (same as the earlier n) members presently. The members are divided into 3 classes: Novice, Minerval, and the Illuminated. Each class consists of a different number of members.
Novice consists of groups of 11 each.
Minerval consists of groups of 13 each.
Illuminated consists of groups of 33 each.
Tapan is further told that Novice has the maximum number of groups and Illuminated has the minimum. Moreover, each class has a composite number of members.

Question 17

Which class must Tapan join such that even after his initiation, the number of members in all the classes remains composite?

(A) Novice (B) Minerval
(C) Illuminated (D) None of these

Supervising all the ‘n’ members is a group of 4 Masters called the Elite. The 4 are Sabazius,Baldur, Gerold and Dagmar. Sabazius is willing to initiate Tapan directly into the Elite group, provided he can solve the third riddle.For a ritual of the Elites, the 4 Masters have come together and are staying at the Leonardo Royale hotel. Tapan has been invited to the hotel as the fifth Master.The hotel consists of 5 rooms and a small restaurant that contains 5 tables. Each Master has a rank, which shows his level of thinking with respect to the whole group. The master with the first rank is said to be the Grand Master, and it is not Tapan. Rooms, as well as tables, are successively numbered from 1 to 5 in a way that each Master lives in a room and sits at a table different in number from his rank. To avoid confrontation, Masters with successive ranks are allowed neither to live in rooms next to each other nor to eat at tables next to each other. To become an Elite, Tapan just has to figure out his rank, room no. and table number. It is known that:
→ Sabazius does not eat at the fifth table.
→ Baldur is not the Grand Master.
→ Sabazius has exactly the middle rank between Dagmar and Tapan.
→ Baldur is more intelligent than Sabazius.
→ Gerold eats at a table next to Baldur.
→ Dagmar does not eat on a table with the same number as his room number.

Question 18

What is Tapan’s table number among the Masters?
(A) 2 (B) 3 (C) 4 (D) 5

In an attempt to find more information about the first British voyage to India, two archaeologists Zilani and Snehit went on a excavation journey. On reaching a rather denser part of the forest, both of them fell down in a very deep moss covered cave, following through the cave they reached a door in front of which was kept a pillar with some inscribes. Going through it vigorously and carefully they were able to deduce that it was a kind of coded puzzle pillar. After more investigation around the pillar, delicate sampling and detailed analysis they came down to this, that the pillar dated further back in time than the first reported voyage of the British in India. The complete understanding of the pillar might bring about quite a big change in Medieval Indian history. The decoding of this is also really important at this moment because this code and the door behind it is their only way out the cave, and they are running out of supplies. Help them solve the mysteriously coded pillar. Pillar is

Properties
→ This is a pillar which is square in shape from top view.
→ It has a property that each row can rotate about the vertical axis.
→ Each column (adjacent columns) connected with the edges are always together and can be interchanged with the other edge columns.

Here 2 & 3 are always together. And 1 & 4 are always together and can be interchangeable with 2 and 3.

Question 19

The code represents a sentence. Find the number of words in above sentence.
(Note: Sentence or word will form like this:-

Here word is “ HELP DUDE ”.)

A) 12 (B) 6 (C) 9 (D) None of these

Question 20

What are the minimum number of moves required to get the final sentence?

A) 8 (B) 6 (C) 10 (D) 4

Question 21

When you divide the preceding number alphabet with succeeding number alphabet (get the remainder) and then sum it. What corresponding alphabet you get for that number if A-Z has been numbered from 1-26 respectively.

A) K (B) E (C) F (D) N

Shashank developed a machine for time travel. The machine he developed works in this fashion:
If suppose one switches the machine on for an hour, then after switching it off; for the next 1 hour, everything within the machine travels backwards in time for the same duration.Then, to satisfy his curiosity, he performs a very unusual experiment on the machine.He creates 6 such time machines and places each of them in a box in a box pattern as shown in the given figure. Now what he does is that he switches on the innermost machine at 8 a.m. on Wednesday and goes away. Then he returns at 6 p.m. in the evening, switches off the machine and sits inside it. Now after the next 10 hours of time travel, he gets out of the machine at 8 a.m.again. At 9 a.m. he comes back and switches on the machine next to the innermost one.Then he goes away and returns at 7 p.m. in the evening, he switches off the machine and sits inside it but outside the innermost machine. He follows the same pattern and thus starts time travelling in all the machines. We define one cycle as the time duration till he finishes the time travel in all the machines at least once

Question 22

How far back in time (in hours) does Shashank when present in the innermost box go at the end of one such cycle?
A) 60 B) 49 C) 105 D) 80

Question 23

At 9:00 am on Wednesday, how many versions of Shashank are present simultaneously(after one cycle)?
A) 6 B) 12 C) 3 D) 11

Question 24

The next day Shashank decides to do something even more drastic. He wanted to see what would happen if he goes back in time and stops himself from using the time machine ever. To do this he has to go to 6 am on Wednesday. The present time on Thursday is 12 noon. It takes him 10 hours to make a time machine. So if he decides to time travel in the same way as he had already done then at minimum how many time machines will he need in a box-in-a-box pattern?
A) 4 B) 5 C) 3 D) 7

Question 25

If he wants to use the bare minimum number of time machines then for at least how long he should stay in the machines?

A) 25 hours B) 25.5 hours C) 30 hours D) 30.5 hours

Hangman
1. C
2. B
3. D
Coded and Folded
4. B
5. C
Sliding Coins
6. D
7. A
Puzzles
8. D
9. 1230
10. D
11. A
De_Cipher Pyramid
12. 0009
I am Blind
13. D
14. D
15. A
Illuminated
16. B
17. A
18. B
Coded Pillar
19. D
20. D
21. D
Time Travel
22. MARKS TO ALL
23. D
24. A
25. B