Sawaal
17
Q:

Which Number would come in place of the underline mark in the series.

3, 9, 21, ___ , 93

A) 39 B) 45
C) 48 D) 51

Answer:   B) 45



Explanation:

First difference is 6 and second is 12. But if we take third as 18, then fourth difference will be 24. Then 93 can not be the last term.

So we have to take the difference as 6, 12, 24 and 48. 

So Answer is 21+24 = 45 

Subject: Number Series
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A) 4467 B) 4538
C) 4184 D) 4485
 
Answer & Explanation Answer: D) 4485

Explanation:

Each term in the series is obtained by subtracting from the preceding term the number formed by the first three digits of preceding term
So,missing term is 4983-498=4485

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Choose the correct alternative that will continue the same pattern and replace 'x' in the series 3,12,27,48,75,x,147

A) 108 B) 127
C) 112 D) 85
 
Answer & Explanation Answer: A) 108

Explanation:

The terms of the given series are 3*(1*1),3*(2*2),3*(3*3),3*(4*4), . . . .
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Choose the correct alternative that will continue the same pattern and replace 'x' in given series 1,2,6,15,31,56,x

A) 65 B) 78
C) 81 D) 92
 
Answer & Explanation Answer: D) 92

Explanation:

The pattern is + 1*1,+ 2*2, +3*3, + 4*4,+ 5*5,+ 6*6, . . . . . . .
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Filed Under: Number Series

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Choose the correct alternative that will continue the same pattern and replace 'x' in series 5,15,17,85,89,623,x

A) 825 B) 759
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Explanation:

The pattern is *3,+2,*5,+4,*7,+6, . . . . .
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Choose the correct alternative that will continue the same pattern and replace 'x' in series 1,2,5,10,25,50,x,250

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Explanation:

The pattern is *2,*5/2,*2,*5/2,*2, . . . . .
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Filed Under: Number Series

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Choose the correct alternative that will continue the same pattern and replace 'x' in series 6,18,42,78,x

A) 84 B) 126
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Answer & Explanation Answer: B) 126

Explanation:

The pattern is +12,+24,+36,+48, . . . .
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Choose the correct alternative that will continue the same pattern and replace 'x' in series 4,9,25,x,121,169,289,361

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Explanation:

The given series consists of squares of consecutive prime numbers
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Choose the correct alternative that will continue the same pattern and replace 'x' in series 1.5,1.55,1.65,1.8,x

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Explanation:

The pattern is +0.05,+0.1,+0.15, . . . .
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Filed Under: Number Series

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