Sawaal
17
Q:

What comes next in the series...

1A2, 3C4, 7G8, ___

A) 15O16 B) 16P17
C) 14O15 D) 13P14

Answer:   A) 15O16



Explanation:

The first digit is formed by adding the numbers which are the results of powers of 2 increased by one and second letter is the corresponding alphabet to that number...last number is the next number to the first one...therefore

15=7+8 (i.e. 2^3)

O is corresponding alphabet to 15

and 16 comes after 15 

Subject: Number Series
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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), . . . .
So,missing term is 3*(6*6)=108

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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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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, . . . . .
So missing term is 623+6=629

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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

A) 75 B) 150
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Answer & Explanation Answer: C) 125

Explanation:

The pattern is *2,*5/2,*2,*5/2,*2, . . . . .
So missing term is 50*(5/2)=125

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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, . . . .
So,missing term=78+48=126

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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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Answer & Explanation Answer: D) 49

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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