# Coding and Decoding: Exercise-5

1. The positions of how many alphabets will remain unchanged, if each of the alphabets in the word COLLEGE is arranged in alphabetical order from left to right?

1. One
2. Two
3. Three
4. Four

Solution: The new arrangement of the word in alphabetical order will be CEEGLLO.

Hence, from the new arrangement, only one alphabet will remain unchanged and it is 'C'.

1. The word 'river' is related to 'boat', in the same way as the word 'book' is related to _______?

1. School
2. College
3. Pen
4. University

Solution: The word 'book' is related to 'Pen'.

1. In a certain code 'this is an apple' is written as 'kt sa jh xa' and 'apple is very sweet' is written as 'xa sa tn ws'. How is 'sweet' written in that code language?

1. tn
2. sa
3. ws
4. eather 'tn' or 'ws'

Answer: (d) eather 'tn' or 'ws'

Solution: In the first and second statements, only two words are common 'apple' and 'is', so it is not clear which codeword stands for the word 'sweet'. It may be 'tn' or 'ws'.

1. Which of the following has the same relationship as that of AC : BD?

1. EF : GH
2. JK : LM
3. QS : RT
4. can't say

Solution: The third option has the same relationship, as given in the question.

1. Which of the following will be the next letter in the given letter series K L N Q U __?

1. W
2. X
3. Y
4. Z

Solution: The gap between every letter is increasing 0, +1, +2, +3, +4 and so on, Hence the next letter will be 'Y'.

1. Which of the following has the same relationship as that of HJ : KI?

1. AB : DC
2. WY : ZX
3. MP : ON
4. can't say

Solution: The second option has the same relationship, as given in the question.

1. Which of the following will be the next number in the given number series 3 1 4 1 5 1__?

1. 4
2. 5
3. 6
4. 7

Solution: On subtracting 2,3,4,5.... from the first, third, fifth numbers and on adding 3,4,5.... with 1, we could find the next number and it is '6'.

1. The position of how many digits in the number 1 2 3 4 5 6 7 8 9 will remain unchanged after the digits are arranged in descending order?

1. One
2. Two
3. Three
4. Four

Solution: After arranging the numbers in descending order we get 9 8 7 6 5 4 3 2 1.

Hence, only one digit will remain unchanged and it is '5'.

1. Three of the following four options are alike in a certain way and form a group. Which is the one that does not belong to that group?

1. Car
2. Bus
3. Train
4. Aeroplane

Solution: The aeroplane can fly whereas others are not.

1. Three of the following four options are alike in a certain way and form a group. Which is the one that does not belong to that group?