## Ques 1.

5, 25, 120, 625, 3125, 15625

(a) 15625

(b) 625

(c) 120

(d) 5

**Ans 1.**The numbers in the series are multiplied by 5 to get the next number.

125 should be in place of 120.

## Ques 2.

4, 8, 11, 22, 18, 36, 24, 50

(a) 8

(b) 22

(c) 36

(d) 24

**Ans 2.**Two numbers from a pair .The first number increases by 7 for the next pair and the second number is the double of first number.

## Ques 3.

2, 4, 12, 24, 72, 142, 432

(a) 432

(b) 12

(c) 142

(d) 72

**Ans 3**. There are two alternate series and in each series, the numbers are multiplied by 6 to get the next number.

## Ques 4.

2, 3, 4, 4, 6, 8, 9, 12, 16

(a) 3

(b) 9

(c) 6

(d)12

**Ans 4.**There are three alternate series and in each series, the numbers are multiplied by 2 to get the next number.

series I : 2, 4, 8

series II : 3, 6, 12

series III : 4, 8, 16

## Ques 5.

97, 91, 86, 83, 79, 77, 76, 76

(a) 86

(b) 76

(c) 91

(d) 83

**Ans 5.**The difference between the consecutive numbers in the series decreases by 1 at each step.

## Ques 6.

7, 11, 11, 9, 15, 7, 19, 5, 23, 1

(a) 5

(b) 7

(c) 1

(d) 9

**Ans 6.**There are two alternate series :

series I : 7, 11, 15, 19, 23, ( addition of 4 )

series II : 11, 9, 7, 5, 3 ( subtraction of 2)

## Ques 7.

3, 7, 12, 28, 48, 118, 192, 448

(a) 12

(b) 118

(c) 28

(d) 7

**Ans 7.**There are two alternate series and in each series, the numbers are multiplied by 4 to get the next number .

112 should be in place of 118.

## Ques 8.

1, 6, 12, 19, 27, ?

(a) 38

(b) 35

(c) 36

(d) 54

**Ans 8.**The difference between the numbers in the series double each time, after beginning from 5, i.e.

## Ques 9.

2, 6, 14, 30, 62, ?

(a) 126

(b) 128

(c) 120

(d) 130

**Ans 9.**The difference between the numbers in the series doubles each time,after beginning from 4, i.e.

## Ques 10.

2, 3, 6, 18, 108,?

(a) 1944

(b) 1658

(c) 648

(d) 1008

**Ans 10.**Every third number in the series is the product to previous two numbers.

## Ques 11.

1, 8, 27, 64, 125, ?

(a) 172

(b) 176

(c) 216

(d) 189

**Ans 11.**The sequence in the series is cube of number in their natural order.

## Ques 12.

2, 3, 5, 7, 11, 13, ?

(a) 19

(b) 57

(c) 31

(d) 17

**Ans 12.**The series consists of prime number in increasing order.

## Ques 13.

80, 64, 48, 32, 16, ?

(a) 4

(b) 0

(c) 8

(d) 1

**Ans 13.**The number in the series are decreasing with the difference of 16 at each step.

## Ques 14.

9, 18, 90, 810, 819, ?

(a) 7371

(b) 900

(c) 8100

(d) 1638

**Ans 14.**The sequence in the series is x 9, + 9 which is repeated.

## Ques 15.

0, 5, 22, 57, ?, 205

(a) 198

(b) 116

(c) 172

(d) 92

**Ans 15.**The series follows this sequence : cube of natural numbers starting from 1 minus odd numbers starting from 1.

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