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 Number Series Questions

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Q:

What is to be replaced in place of '?' in the following series ?

 A2BC, ?, ABC4, A5BC

A) A3BC

B) ABC3

C) AB3C

D) A2B3C4

A) Option A B) Option B
C) Option C D) Option D
 
Answer & Explanation Answer: C) Option C

Explanation:

Because the letters are the same, concentrate on the number series, which is a simple 2, 3, 4, 5, 6 series, and follows each letter in order.

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6 36395
Q:

In the following question, select the missing number from the given series.

 

42, 21, 21, ?, 63, 157.5

 

A) 30.75 B) 32.5
C) 31.5 D) 33.75
 
Answer & Explanation Answer: C) 31.5

Explanation:
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3 36366
Q:

Which number replaces the '?' in the given series

108, 127, 2413, 2430, 41310, ?, 619875 

A) 41975 B) 41325
C) 84375 D) 41365
 
Answer & Explanation Answer: B) 41325

Explanation:

The given series follows a pattern of +19, x19, +17, x17, +15, x15,...

Here the number which is to be replaced in ? is

41310+15=41325.

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14 35755
Q:

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

36, 18, 6, 3, 1, ?

A) 0.25 B) 1.5
C) 0.5 D) 0.75
 
Answer & Explanation Answer: C) 0.5

Explanation:

Given number series - 36, 18, 6, 3, 1, ?

 

The pattern is as follows: 36/2 = 18

 

18/3 = 6

 

6/2 = 3

 

3/3=1

 

1/2 = 0.5

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1 35269
Q:

In the following question, select the missing number from the given series.

 

11, 14, 19, 22, 27, ?

 

A) 32 B) 31
C) 30 D) 33
 
Answer & Explanation Answer: C) 30

Explanation:
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Exam Prep: Bank Exams , CAT

1 35190
Q:

Find the next number in the series given 18, 90, 450, 2250, ?

 

A) 4520 B) 6520
C) 7250 D) 11250
 
Answer & Explanation Answer: D) 11250

Explanation:

The given number series is 18, 90, 450, 2250, ?

18

18 x 5 = 90

90 x 5 = 450

450 x 5 = 2250

2250 x 5 = 11250

Hence, the next number in the given series is 11250.

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30 34834
Q:

Find the missing (?) in the series.

 

3, 5, 9, 11, ?, 33, 65,...

A) 23 B) 21
C) 17 D) 15
 
Answer & Explanation Answer: D) 15

Explanation:
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2 34603
Q:

Which number will fit both the series of numbers?

Series A : 1, 4, 9,...
Series B : 1, 8, 27,...

 

A) 42 B) 36
C) 64 D) 25
 
Answer & Explanation Answer: C) 64

Explanation:
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4 34557