# 12th Class Mental Ability Series Notes - Odd Test

Notes - Odd Test

Category : 12th Class

# Odd Test

Introduction

This chapter is also known as classification which means to classify the group from give relationship. It is a process of grouping various objects on the basis of their common properties. It helps to make homogeneous.

In this type of questions some words are given in such a way that one does not belong to the group which the rest are members. The word which does not belong to that group is called an odd word. Candidates have to select this odd number / word. The different types of this test is given as below:

Example:

This type of questions are based on English alphabets which is classified in a group using particular rule / method. Out of four groups / numbers, three are alike in some manner and only one is different which is called odd. The odd alphabet order is your answer.

1. Select the one which is different from other three responses.

(a) DEF                         (b) GHI

(c) KLM                         (d) OPR

Ans.     (d)

Explanation:    $D\,\,\to \,\,E\,\,\to \,\,F$

$G\,\,\to \,\,H\,\,\to \,\,I$

$K\,\,\to \,\,L\,\,\to \,\,M$

$O\,\,\xrightarrow{+1}\,\,P\,\,\xrightarrow{+2}R$

Here option (a), (b) and (c) are arrangement in sequence but option (d) is no arranged in sequence. Hence the answer is (d).

1. Which one is different from the other three?

(a) ACEH                      (b) LNPS

(c) PRTW                       (d) WYZA

Ans.     (d)

Explanation:

$A\xrightarrow{+2}C\xrightarrow{+2}E\xrightarrow{+3}H$

$L\xrightarrow{+2}N\xrightarrow{+2}P\xrightarrow{+3}S$

$P\xrightarrow{+2}R\xrightarrow{+2}T\xrightarrow{+3}W$

$W\xrightarrow{+1}Y\xrightarrow{+1}Z\xrightarrow{+1}A$

Hence option (d) does not fit in the group.

1. Which one does not fit in the given group?

(a) AEI                          (b) JNR

(c) SWX                        (d) BFJ

Ans.     (c)

Explanation:

$A\xrightarrow{+4}E\xrightarrow{+4}I$

$J\xrightarrow{+4}N\xrightarrow{+4}R$

$S\xrightarrow{+4}W\xrightarrow{+1}X$

$B\xrightarrow{+4}F\xrightarrow{+4}J$

Therefore option (c) does not fit in the group

1. Which one is different from the other three?

(a) DCBA                          (b) MNOP

(c) HGFE                          (d) LKJI

Ans.     (b)

Explanation: Except in (b); in each group fourth letter is obtained by moving third letter one step backward, while in (b) fourth letter is obtained by moving the third letter one step forward. Hence the answer is (b).

1. Find the odd choice from the group?

(a) DEVW                                  (b) GHST

(c) JKNO                                    (d) CBED

Ans.     (d)

Explanation:

$D\xrightarrow{+1}E\,and\,V\xrightarrow{+1}W$

$G\xrightarrow{+1}H\,and\,S\xrightarrow{+1}T$

$J\xrightarrow{+1}K\,and\,N\xrightarrow{+1}O$

But            $C\xrightarrow{-1}B\,and\,E\xrightarrow{-1}D$

Snap Test

In this type of questions four alternative are given, of which three are similar to one another while the fourth one is different. So you are required to pick out the item which does not belong to the group, which is your answer.

Three of the following four are alike in a certain way and so form a group which one does not belong to that group?

1. Find the odd man out from the alternatives?

(a) Jawaharlal Nehru                          (b) Rajiv Gandhi

(c) Indira Gandhi                                   (d) Pranab Mukherjee

Ans.     (d)

Explanation: All except option (d) were prime ministers but Pranab Mukherjee is president.

1. Find the odd man out from the alternatives?

(a) Dog                                      (b) Bark

(c) Cat                                       (d) Rat

Ans.     (b)

Explanation: Except (b) all are animals.

1. Find the odd man out from the alternatives?

(a) Book                                    (b) Pen

(c) Stationary                        (d) Copy

Ans.     (c)

Explanation: All are the part of Stationary.

1. Find the odd man out from the alternatives?

(a) Ear                                       (b) Hands

(c) Fingers                              (d) Legs

Ans.     (c)

Explanation: Except fingers, all other parts of the body are in pair. Hence option (c) is the correct answer.

1. Find the odd man out from the alternatives?

(a) Branch                                 (b) Leaf

(c) Root                                     (d) Plant

Ans.     (d)

Explanation: All items are the parts of a plant. Hence plant does not belong to the group. So, the answer is (d).

In this type of questions, the groups are based on numbers and different types of number. The numbers are arranged on certain rule / method. Out of the given numbers, one does not show similar property and that number is selected as your answer. Here mathematic symbols are also used.

1. Find the odd man out from the alternatives?

(a) 36                            (b) 64

(c) 108                          (d) 54

Ans.     (b)

Explanation: All the rest numbers are divisible by 9.

$36=9\,\,\times \,\,4,\,\,64\,\,\ne \,\,9\,\times \,\,?,\,\,108\,\,=\,\,9\,\,\times \,\,12,\,\,54\,\,=\,\,9\,\,\times \,\,6$

1. Find the odd man out from the alternatives?

(a) 212                          (b) 343

(c) 757                          (d) 511

Ans.     (d)

Explanation: In all the other numbers first and third digit are same

Find the odd man out from the alternative?

(a) 706                          (b) 507

(c) 489                          (d) 250

Ans.     (c)

Explanation: In all the other numbers zero is used.

1. Find the odd man out from the alternatives?

(a) 49                               (b) 85

(c) 121                              (d) 81

Ans.     (b)

Explanation: All the rest numbers are perfect square

$49\,\,=\,\,\,{{(7)}^{2}},\,\,85\,\,\ne \,\,2,\,\,121\,\,=\,\,{{(11)}^{2}},\,\,81\,\,=\,\,{{(9)}^{2}}$

1. Find the odd man out from the alternatives?

(a) 5                              (b) 11

(c) 7                              (d) 9

Ans.     (d)

Explanation: All the rest numbers are prime numbers.

Direction question no (11 - 15): In this type of questions, some pair of words are given, out of which   the words in all pairs except one bear certain relations. Therefore, candidates are required to decipher this relationship and choose the pair in which the words are differently related. Thus the odd one is your answer.

11.

(a) Tree : Plant              (b) Wealth : Money

(c) Wish : Desire          (d) Heavy : Light

Ans.     (d)

Explanation: In all the other pairs, the first word is the synonym of the second word.

12.

(a) Black : White             (b) Weapons : Arms

(c) In : Out                          (d) High : Low

Ans.     (b)

Explanation: In all the other pairs, the first word is the opposite of the second word.

13.

(a) Head and Cap           (b) Dhoti and Chest

(c) Hands and Gloves      (d) Feet and Shoes

Ans.     (b)

Explanation: In all the other pairs, the first word is worn on the second word.

14.

(a) Camel and Ass          (b) Hen and Chicken

(c) Sheep and Lamb        (d) Cow and Cats

Ans.     (a)

Explanation: In all the other pairs, the second word is the baby of the first word.

15.

(a) Horse and Stable       (b) Birds and Nest

(c) Dog and Den             (d) Sheep and Pen

Ans.     (c)

Explanation: In all the other pairs the first word resides in the second word.

##### Notes - Odd Test

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