## Classification

#### Classification

Direction: In each of the following questions, five/four words/number are given, out of which four/three are same in one way or the other and the fifth/fourth one is different from these four/three. Select the odd one.

1. NA

1. Except '384' , all the others are perfect Cube of natural number.

##### Correct Option: D

Except '384' , all the others are perfect Cube of natural number.

1. NA

1. Except '39', all the others are prime numbers, while 39 is a composite number
As, 39 → 13 x 3

##### Correct Option: B

Except '39', all the others are prime numbers, while 39 is a composite number
As, 39 → 13 x 3

1. NA

1. Except '189', all the others are square number.
25 → 52, 64 → 82, 225 → 152 and 121 → 112

##### Correct Option: C

Except '189', all the others are square number.
25 → 52, 64 → 82, 225 → 152 and 121 → 112

1. NA

1. Except '225' , all the other are perfect squares of natural numbers.

##### Correct Option: D

Except '225' , all the other are perfect squares of natural numbers.

1. NA

1. 83 is the only number which is prime, while others are composite numbers.

##### Correct Option: B

83 is the only number which is prime, while others are composite numbers.