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 Number Series Questions

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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 32790
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 32238
Q:

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

1, 244, 163, 190, 181, ?,

A) 188 B) 198
C) 221 D) 184
 
Answer & Explanation Answer: D) 184

Explanation:

Given number series -1, 244, 163, 190, 181, ?,

 

The pattern is as follows

 

1 + 243 = 244

 

244 - 81 = 163

 

163 + 27 = 190

 

190 - 9 = 181

 

181 + 3 = 184

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4 31252
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 30923
Q:

Choose the missing terms out of the given alternatives Z, X, S, I, R, R, ?, ?

A) J, I B) K, M
C) G, I D) J, K
 
Answer & Explanation Answer: C) G, I

Explanation:

Z - 2 = X
X - 5 = S
S - 10 = I
I - 17 = R
R - 26 = R
R - 37 = G
G - 50 = I
The series 2, 5, 10, 17, 26, 37, 50 is obtained by the pattern +3, +5, +7, +9, . . . .

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188 30888
Q:

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


1, 3, 5, 7, ?

 

A) 9 B) 11
C) 10 D) 12
 
Answer & Explanation Answer: A) 9

Explanation:
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46 30672
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 29713
Q:

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

 

13, 17, 26, 42, 67, ?

 

A) 103   B) 91
C)  109   D) 111
 
Answer & Explanation Answer: A) 103  

Explanation:
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33 29620