Coding and Decoding: Exercise-3


  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. Apple
    2. Banana
    3. Mango
    4. Cauliflower


Answer: (d) Cauliflower

Solution: Cauliflower is a vegetable whereas others are fruits.

  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. Iron
    2. Mercury
    3. Gold
    4. Silver


Answer: (b) Mercury

Solution: Mercury is in the form of the liquid whereas others are in the form of solid.

  1. In a certain code EDUCATION is written as '% 4 7 # 1 * 9 @ 2'. How is EDICTION written in that code.

    1. % 4 9 # * 9 @ 2
    2. # 4 9 # * 9 @ 7
    3. * 4 9 # * 9 @ %
    4. % 4 7 # % 9 @ 2


Answer: (a) % 4 9 # * 9 @ 2

Solution: write the elements as coded for word EDUCATION.

  1. In a certain code MANGO is written as '5 # 3 2 *' and MOBILE is written as '5 * % 4 9 $'. How is BILLION written in that code?

    1. $ 4 9 9 4 * @
    2. % 4 9 9 4 * 3
    3. $ 4 9 9 4 * 3
    4. % 4 9 9 4 * @


Answer: (b) % 4 9 9 4 * 3

Solution: write the elements as coded for words MANGO and MOBILE.

  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. 13
    2. 15
    3. 17
    4. 19


Answer: (b) 15

Solution: The number 15 is the non-prime number whereas others are prime numbers.

  1. In a certain code 'Apple is a fruit' is written as 'dl tn kp wx', and 'fruit is good for health' is written as 'wx tn ms li tr'. What is the code for the word 'fruit'?

    1. tn
    2. wx
    3. li
    4. can't say


Answer: (d) can't say

Solution: In the statement first and second two words 'is' and 'fruit' are common and two codewords 'tn' and 'wx' are common, but it is not clear that which word stands for which code word.

  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. Cat
    2. Dog
    3. Cow
    4. Deer


Answer: (d) Deer

Solution: Deer is a wild animal whereas others are the domestic animals.

  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. Pen
    2. Pencil
    3. Book
    4. Bicycle


Answer: (d) Bicycle

Solution: The bicycle is not used to write whereas others are used to write.

  1. In a certain code UNIVERSITY is written as '7 % 3 1 # 4 9 * 6 @'. How is UNITY written in that code?

    1. 7 % 3 6 @
    2. 9 % 3 6 *
    3. * % 3 6 @
    4. # % 3 6 @


Answer: (a) 7 % 3 6 @

Solution: write the elements as coded for word UNIVERSITY.

  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. America
    2. Australia
    3. Africa
    4. Austria


Answer: (d) Austria

Solution: Austria is a country only whereas others are countries as well as the continent.