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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2486 211079
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 , +12, +22, +32, +42, +52,+62 

Here 35 is wrong, So our wrong number is 91

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790 155098
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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1289 152937
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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647 142976
Q:

Find the wrong number in the given series.

8, 27, 125, 343, 1381

A) 27 B) 8
C) 343 D) 1381
 
Answer & Explanation Answer: D) 1381

Explanation:

Given series follows Cubes on Prime Numbers 

 

i.e 23, 33, 53,...but  93is 1331

 

so 1381 is wrong

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206 89585
Q:

1, 2, 3, 10, ?, 9802

A) 99 B) 199
C) 299 D) 999
 
Answer & Explanation Answer: A) 99

Explanation:

2 = 12 + 13 = 22 - 110 = 32 + 1Now 102 - 1 = 999802 = 992 + 1

 

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998 69950
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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407 66338
Q:

Find the next number in the given sequence?

11, 17, 39, 85, ?

A) 133 B) 143
C) 153 D) 163
 
Answer & Explanation Answer: D) 163

Explanation:

Her the given number series is 11, 17, 39, 85, ?

 

 

1111 + 32 - 3 = 1717 + (52 - 3) = 3939 + (72 - 3) = 8585 + (92 - 3) = 163

 

Hence, the next number in the given sequence is 163.

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57 56748