1
Q:

What is the next number in this series ? 4, 6, 12, 18, 30, 42, 60, ?

 A) 71 B) 72 C) 73 D) 69

Explanation:

With close observation, you will note that each number in the list is in the middle of two prime numbers. Thus:

4 is in the middle of 3 and 5, 6 is in the middle of 5 and 7, 12 is in the middle of 11 and 13, 18 is in the middle of 17 and 19, 30 is in the middle of 29 and 31. 42 is in the middle of 41 and 43, 60 is in the middle of 59 and 61.

Therefore, the next number would be the one that is in the middle of the next two prime numbers, which is 72 (which is in the middle of 71 and 73).

Q:

Find the Odd one out of the following Numbers?

 A) 3 B) 19 C) 67 D) 133

Explanation:

Here among the given numbers, 3, 19, 67 are prime numbers. And 133 is not a prime number.

Hence, the odd number of the given numbers is 133.

0 130
Q:

Find the odd man out of the number series?

18     37     76     155     314     635

 A) 37 B) 155 C) 314 D) 635

Explanation:

Given Number series is 18     37     76     155     314     635

follows a pattern that,

18

18 x 2 +1 = 37

37 x 2 +2 = 76

76 x 2 +3 = 155

155 x 2 +4 = 314

314 x 2 +5 = 633 not 635

Hence, the odd man is 635.

5 58
Q:

Please enter the Missing number: 4 8 14 22 ?

 A) 28 B) 32 C) 46 D) 36

Explanation:

Here the given series follows a pattern that,

2- 0 = 4

3- 1 = 8

4- 2 = 14

5- 3 = 22

6- 4 = 32

Hence, the missing number is 32

Method 2 ::

The difference between 4 and 8 is 4, the difference between 8 and 14 is 6, the difference between 14 and 22 is 8. So the next difference between 22 and the next number will be 10 since it follows (4,6,8,10 - add +2 each time)

Hence, 22 + 10 = 32 is the missing number.

3 103
Q:

Find the next number in the given number series?

0, 3, 8, 15, 24, ?

 A) 35 B) 37 C) 34 D) 36

Explanation:

Here the given number series is 0, 3, 8, 15, 24, ?

The next number in the given series can be found such a way that the number series follows a pattern,

2 96
Q:

Find the Missing number in the given number series?

5, 9, 15, 23, ?, 45

 A) 33 B) 29 C) 31 D) 35

Explanation:

The given series follows a pattern that,

+4, +6, +8, +10, +12...

5

5 + 4 = 9

9 + 6 = 15

15 + 8 = 23

23 + 10 = 33

33 + 12 = 45

Hence, the missing number in the series is 33.

1 76
Q:

Find the next number in the number series?

1, 4, 12, 32, ?

 A) 80 B) 100 C) 192 D) 169

Explanation:

Next number of the sequence 1, 4, 12, 32,...

1 = 2 x ${2}^{0}$

4 = 2 x ${2}^{1}$

12 = 3 x ${2}^{2}$

32 = 4 x ${2}^{3}$

80 = 5 x ${2}^{4}$.

0 173
Q:

Find the Odd One Out?

3 24 186 1008 5040 20160

 A) 24 B) 20160 C) 186 D) 5040

Explanation:

The given number series is 3  24  186  1008  5040  20160

Here  the given series follows a pattern that,

3

3 x 8 = 24

24 x 7 = 168 not 186

168 x 6 = 1008

1008 x 5 =  5040

5040 x 4 = 20160

Hence the Odd One in the number series is 186.

1 99
Q:

Find the missing number in the given number series?

514  470  ?  415  404

 A) 441 B) 437 C) 426 D) 420

Explanation:

Given number series is 514   470   ?   415   404

Here the pattern it follows is

514

514 - 44 = 470

470 - 33 = 437

437 - 22 = 415

415 - 11 = 404

Hence, the missing number in the given number series is 437.