Number Series Questions

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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480 73395
Q:

Find the missing number in the given number series?

625, 625, 600, ?, 475, 875

A) 545 B) 700
C) 675 D) 725
 
Answer & Explanation Answer: B) 700

Explanation:

Here the given number series 625, 625, 600, ?, 475, 875 follows a pattern that

625

625 + (0 x 0) = 625

625 - (5 x 5) = 625 - 25 = 600

600 + (10 x 10) = 600 + 100 = 700

700 - (15 x 15) = 700 - 225 = 475

475 + (20 x 20) = 475 + 400 = 875

 

Hence, the missing number in the given number series is 700.

 

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115 60078
Q:

Find the missing number in the following series?

2, 3, 10, 39, ?, 885

A) 128 B) 156
C) 172 D) 189
 
Answer & Explanation Answer: C) 172

Explanation:

Take a Look at the below sereies

2×1+12=3

3×2+22=10

10×3+32=39

39×4+42=172

172×5+52=885

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201 56219
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 x2 - 1, x2 - 2, x2 - 3,...

 53 x 2 - 4 = 106 - 4 = 102

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492 53875
Q:

Find the wrong number in the series

7, 28, 63, 124, 215, 342, 511

A) 28 B) 124
C) 215 D) 342
 
Answer & Explanation Answer: A) 28

Explanation:

Here the number follows the given rule 

 23-1, 33-1, 43-1, 53-1, ...

 

But 28 has been given in problem series.

 

so 28 is wrong number.

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220 48768
Q:

7, 8, 18, 57, ?, 1165, 6996

A) 228 B) 542
C) 232 D) 415
 
Answer & Explanation Answer: C) 232

Explanation:

Here 2nd number = (1st number x 1 )+1

 3rd number = (2nd number x 2 +2) 

4th number = (3rd number x 3 )+3 and so on..

 

Therefore, 5th number = (4th number x 4) +4 =57 x 4 + 4 =232.

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285 48193
Q:

What will be the next term in 

BKS, DJT, FIU, HHV, __

A) IJX B) IGX
C) JGW D) JGU
 
Answer & Explanation Answer: C) JGW

Explanation:

Here the first letter of the group is moved with a gap of one letter, the second letter of the group is backwardness and the third letter of the group is forwardness proceeding like this we get the letter group "JGW"

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91 46845
Q:

Which fraction comes next in the sequence

23, 13, 527, 781, ?

A) 1/27 B) 11/278
C) 9/48 D) 7/123
 
Answer & Explanation Answer: A) 1/27

Explanation:

Clearly, the numerators of the fractions in the given sequence follow the series of 2, 3, 5, 7,... and the denominator follows 3, 9, 27, 81, 243, ...
Then, the next term in the given sequence is  935 = 9243 = 127 .

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54 44247