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 Number Series Questions

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Q:

In the following sum, “?” stands for which digit ?


8 + ?8 + 28 + 83 + 8? = 2?8

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: D) 1

Explanation:

By trial and error method from the given options,

'1' satisfies the above given equation.

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10 40357
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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325 40088
Q:

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


24, 26, 28, ?, 32, 34

 

A) 29 B) 30
C) 31 D) 36
 
Answer & Explanation Answer: B) 30

Explanation:
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17 40082
Q:

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

 

11, 22, 44, 88, 176, ?

 

A) 350 B) 362
C) 352 D) 282
 
Answer & Explanation Answer: C) 352

Explanation:
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2 40028
Q:

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

256, ?, 190, 167, 148, 131

A) 165 B) 219
C) 136 D) 216
 
Answer & Explanation Answer: B) 219

Explanation:

Given number series 131 + 17 = 148 148 + 19 = 167 167 + 23 = 190 190 + 29 = 219 219 + 37 = 256

 

Here addition is based on 17 + 2= 19, 19 + 4 = 23, 23 + 6 = 29, 29 + 8 = 37

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5 39874
Q:

Guess the next number in the given number series?

999, 990, 998, 991, 997, 992, ?

A) 996 B) 1000
C) 999 D) 1001
 
Answer & Explanation Answer: A) 996

Explanation:

The given number series 999, 990, 998, 991, 997, 992, ?

It follows a pattern that,

999

999 - 9 = 990

990 + 8 = 998

998 - 7 = 991

991 + 6 = 997

997 - 5 = 992

992 + 4 = 996

 

Hence, the next number in the given number series is 996.

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8 39874
Q:

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

 

9, 9, 18, 54, 216, ?

 

A) 1020 B) 1080
C) 636 D) 740
 
Answer & Explanation Answer: B) 1080

Explanation:
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0 39570
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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178 39285