# Number Series Questions

Q:

Find the missing number in the series?

4, 18, ?, 100, 180, 294, 448

 A) 48 B) 50 C) 58 D) 60

Answer & Explanation Answer: A) 48

Explanation:

Take a Look at this series :

$23$ - $22$ =  8 - 4 = 4

$33$ - $32$ = 27 - 9 = 18

$43$ - $42$ = 64 - 16 = 48

$53$ - $52$ = 125 - 25 = 100

$63$ - $62$ = 216 - 36 = 180

$73$ - $72$ = 343 - 49 = 294

$83$ - $82$ = 512 - 64 = 448

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975 61750
Q:

Find the missing number in the following series?

3, 5, 5, 19, 7, 41, 9, ?

 A) 71 B) 61 C) 79 D) 69

Answer & Explanation Answer: A) 71

Explanation:

Fiest series : 3, 5, 7, 9

Second series : 5, 19, 41, ?

Difference of Second series are 14, 22, 30 etc

Next term is 41+30 i.e equal to 71

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564 59856
Q:

What should come in place of question mark (?) in the following number series?

132       156       ?         210          240          272

 A) 196 B) 182 C) 199 D) 204

Answer & Explanation Answer: B) 182

Explanation:

The given series follows a logic that

11 x 12, 12 x 13, 13 x 14, 14 x 15, 15 x 16,...

So the missing number is 13 x 14 = 182

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237 54847
Q:

Find the wrong number in the series.

1, 2, 6, 15, 31, 56, 91

 A) 31 B) 15 C) 56 D) 91

Answer & Explanation Answer: D) 91

Explanation:

The difference of the two consecutive numbers are 1, 4, 9, 16, 25, 35.

This is clearly ,

Here 35 is wrong, So our wrong number is 91

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287 44386
Q:

1, 2, 3, 10, ?, 9802

 A) 99 B) 199 C) 299 D) 999

Answer & Explanation Answer: A) 99

Explanation:

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634 40598
Q:

Find out the wrong term in the series 2, 3, 4, 4, 6, 8, 9, 12, 16

 A) 9 B) 12 C) 16 D) 8

Answer & Explanation Answer: A) 9

Explanation:

The given sequence is a combination of three series:
i)1st, 4th, 7th terms i.e, 2, 4, 9
ii)2nd, 5th, 8th terms i.e, 3, 6, 12
iii)3rd, 6th, 9th terms i.e, 4, 8, 16
In each one of i, ii, iii, each term is twice the preceding term.
So, 9 is wrong and must be replaced by (4*2) = 8

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306 29341
Q:

8, 15, 28, 53, ?, 199

 A) 101 B) 102 C) 103 D) 104

Answer & Explanation Answer: B) 102

Explanation:

Here the series of the form is

53 x 2 - 4 = 106 - 4 = 102

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214 26599
Q:

Find the wrong number in the series.

3, 8, 15, 24, 34, 48, 63

 A) 15 B) 24 C) 34 D) 48

Answer & Explanation Answer: C) 34

Explanation:

The difference between consecutive numbers of the given series are respectively 5, 7, 9, 11, 13, and 15.

Therefore, 24+11=35 But in your problem it is given as 34.so 34 is wrong number

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192 25112