Number Series Questions

Q:

Find out the wrong term in the series 1, 5, 9, 15, 25, 37, 49

A) 15 B) 49
C) 25 D) 37
 
Answer & Explanation Answer: A) 15

Explanation:

The terms of the given series is 1*1, 2*2 + 1, 3*3, 4*4 +1, 5*5, 6*6 + 1, . . . . .
So, 15 is wrong and must be replaced by (4*4 + 1) = 17

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45 17165
Q:

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

123, 120, 116, 111, ?, 98

 

A) 100 B) 105
C) 99 D) 103
 
Answer & Explanation Answer: B) 105

Explanation:
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1 17150
Q:

Select the number missing from the given sequence.

 

1, 2, 6, ___, 120, 720

 

A) 24 B) 9
C) 50 D) 12
 
Answer & Explanation Answer: A) 24

Explanation:
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4 17069
Q:

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

 

144, 139, 133, 128, ?, 117, 111

 

A) 124 B) 123
C) 122 D) 126
 
Answer & Explanation Answer: C) 122

Explanation:
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7 17030
Q:

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

 

21, 25, 34, 50, ?, 111

 

A) 80   B) 75  
C) 65   D) 92
 
Answer & Explanation Answer: B) 75  

Explanation:
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5 16964
Q:

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

 

41, 54, 67, ?, 93

 

A) 80 B) 82
C) 74 D) 90
 
Answer & Explanation Answer: A) 80

Explanation:
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3 16880
Q:

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

 

113, 116, 119, 122, 125, ?

 

A) 128 B) 126
C) 129   D) 130
 
Answer & Explanation Answer: A) 128

Explanation:
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5 16691
Q:

Choose the missing terms out of the given alternatives Z, S, W, O, T, K, Q, G, ?, ?

A) N,D B) N,C
C) O,D D) O,C
 
Answer & Explanation Answer: B) N,C

Explanation:

The given sequence a combination of two series:
I)Z, W, T, Q, ?      and      II)S, O, K, G, ?


The pattern I is
Z - 3 = W
W - 3 = T
T - 3 = Q
Q - 3 = N


The pattern in II is
S - 4 = O
O - 4 = K
K - 4 = G
G - 4 = C

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