21
Q:

What should come in place of both the question marks in the equation

?128=162?

 

 

 

A) 12 B) 14
C) 144 D) 196

Answer:   A) 12



Explanation:

Let x128=162x

 

Then, x2=128×162 =64×2×18×9=82×62×32 = 8×6×3 =144

 

x=12

Q:

What are the 2 natural numbers, sum of whose squares is 52?

A) 2, 7 B) 3, 5
C) 4, 6 D) 5, 6
 
Answer & Explanation Answer: C) 4, 6

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3 2912
Q:

If 1-aa3+9 = 19 - a1-a3, then what is the value of a?

A) 3/10, 7/10 B) 1/10, 9/10
C) 2/5, 3/5 D) 1/5, 4/5
 
Answer & Explanation Answer: B) 1/10, 9/10

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4 1149
Q:

The cube of 997 is

A) 991026973 B) 991029673
C) 991029773 D) 991097273
 
Answer & Explanation Answer: A) 991026973

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1 1012
Q:

If the numbers  93, 204, 256 are arranged in ascending order, then the right arrangement is 

A) 256 < 204 < 93 B) 93 < 204 < 256
C) 204 < 256 < 93 D) 256 < 93 < 204
 
Answer & Explanation Answer: D) 256 < 93 < 204

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1 1095
Q:

What is the value of 473+529+256+289 ?

A) 27 B) 23
C) 19 D) 39
 
Answer & Explanation Answer: B) 23

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2 1365
Q:

The cube of 105 is

A) 1157625 B) 1175625
C) 1185625 D) 1158625
 
Answer & Explanation Answer: A) 1157625

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1 1166
Q:

What is the number of decimal places in a cube root of a number having 27 decimal places ?

A) 3 B) 6
C) 9 D) 27
 
Answer & Explanation Answer: C) 9

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3 3612
Q:

Which of the following equations has 3 as a root?

A) x2 -­ 7x + 12 = 0 B) x2 -­ 5x + 12 = 0
C) x2 + 3x + 12 = 0 D) x2 + 3x -­ 12 = 0
 
Answer & Explanation Answer: A) x2 -­ 7x + 12 = 0

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2 795