• #### CLASSIFICATION

In these types of questions, the students are required to find out the ‘odd one’ out. The candidate is given five terms and out of those terms, one does not match with the others which is called ‘odd one’ in the group. The students are required to identify it on the basis of common trait observed in the other four terms.

### TYPE – I

In this type of questions, a groups of letters is provided, in which you are required to select that group of letters as your answer, in which letters do not follow the same pattern as that of the other groups of letters. The letters in a group are arranged on the basis of relative distance between the two letters as in the English alphabet; In other words, certain number of letters are skipped between the two successive letters in the given group of letters. It will become more clear by comprehending the examples given below:

#### Ex. 1. Four of the following five are alike on the basis of their position in English alphabet. Which is the one that does not belong to the group?

(1) WZT       (2) KNH       (3) RUQ       (4) DGA       (5) ILF

Solution:

#### Ex. 2. Four of the following five are alike in a certain way with regard to their position in English alphabet. Which one does not belong to that group?

(1) IJK       (2) ABC       (3) OPQ       (4) EFG       (5) VWX

#### Ex. 3. Four of the following five are alike in respect to their position in the English alphabet and hence form a group. Which one does not belong to that group?

(1) CFI       (2) UXA       (3) RUX       (4) SVZ       (5) LOR

Solution:

#### Ex. 4. Four of the following five are alike in a certain way and so form a group with respect to their position in English alphabet. Which is the one that does not belong to the group?

(1) KNR       (2) ADI       (3) CFJ       (4) HKO       (5) PSW

Solution:

#### Ex. 5. Four of the following five are alike in a certain way and so form a group with respect to their position in English alphabet. Which is the one that does not belong to the group?

(1) WHITE-IWEHT       (2) BLACK-ABKLC       (3) TYPES-PTSYE       (4) BANKS-NBSAK (5) ABOUT-OATUB

Solution: (5), In all the options first letter goes to 4th position in new arrangement second letter goes to 4th position in the new arrangement except in 5th option because in this second letter goes to fifth position.

### TYPE II

In this type, we have included such questions which contain some items which have certain common property and these type of questions are generally based on general knowledge. Here, you are required to find out the item which can not be grouped with other items for the lack of common property. It should be noted that the same item can be grouped differently in the different context. Therefore, the process of grouping depends much on the nature of the given items. Consider the following examples.

#### Ex. 6. (1) Earth       (2) Saturn       (3) Moon       (4) Sun       (5) Jupiter

6. (4) Sun is the odd one because all others are revolving heavenly bodies while the position of Sun is stationary. Earth, Saturn and Jupiter are planets, which revolve around the Sun whereas Moon is a satellite which revolves round the planet Earth.

#### Ex. 7. (1) Earth       (2) Saturn       (3) Moon       (4) Mars       (5) Jupiter

7. (3) Moon is the odd one because all others are planets and Moon is a satellite.

#### Ex. 8. (1) Horse       (2) Donkey      (3) Cow       (4) Goat       (5) Dog

8. (5) Except dog, all other animals are herbivores.

#### Ex. 9. (1) June       (2) Year       (3) Week       (4) Month       (5) Day

9. (1) June is a name of the month.

#### Ex. 10. (1) Dog      (2) Cat       (3) Horse       (4) Buffalo      (5) Zebra

10. (5) Zebra is a wild animal.

#### Ex. 11. (1) Apple       (2) Orange      (3) Papaya      (4) Rose       (5) Guava

11. (4) Except rose, all others are fruits. Rose is a flower.

#### Ex. 12. (1) Tiger       (2) Cow      (3) Bitch       (4) Mare       (5) Lioness

12. (1) Except Tiger, all others are females.

#### Ex. 13. (1) Pear       (2) Mango       (3) Orange      (4) Apple       (5) Radish

13. (5) Except Radish all others are fruit.

#### Ex. 14. (1) Jumping      (2) Running      (3) Walking      (4) Exercising      (5) Jogging

14. (4) All others are different modes of exercising.

#### Ex. 15. (1) Novel       (2) Poetry      (3) Drama      (4) Literature      (5) Story

15. (4) All others are different forms of literature.

#### Ex. 26. 16  18  44  136  548  2744

1) 148       2) 48       3) 564)      4)64       5) None of these

26. (2) The series is x1+4, x2+4, x3+4,….

#### Ex. 27. 64  168 100  136  120  124

1) 132      2) 154      3) 90       4) 204      5) None of these

27. (4) The series is +(10)2, -(8)2, +(6)2, -(4)2,…

#### Ex. 28. 75  74  146  430  1736   8675

1) 427       2) 546      3) 856       4) 542      5) 792

28. (3) The series is x1 – 1, x2 – 2, x3 – 3, x4 – 4,….

#### Ex. 29. 4  8  62  431  2582   12905

1) 278      2) 232      3) 328      4) 198       5) None of these

29. (1) The series is x9- 1, x8 – 2, x7 – 3, x6 – 4, ….

#### Ex. 30. 15  16  36  117  480  2445

1) 481      2) 841      3) 866      4) 964       5) None of these

30. (5) Ans = 966 The series is x 1+ 12, x 2 + 22, x3 +32, …