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:

Find the square root of 1485961

A) 1213 B) 1219
C) 1229 D) 1239
 
Answer & Explanation Answer: B) 1219

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Exam Prep: Bank Exams

1 1265
Q:

What is the value of 361+3.61+0.0361 ?

A) 20.9 B) 22.11
C) 22.49 D) 21.09
 
Answer & Explanation Answer: D) 21.09

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Exam Prep: Bank Exams , CAT

4 1312
Q:

Determine the value of 'x' when 3x3 = 27

A) 1 B) 3
C) 9 D) 12
 
Answer & Explanation Answer: C) 9

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2 1061
Q:

If 3a=4b=6c and a+b+c=279 then a2+b2+c2 is equal to

A) 87 B) 39
C) 82 D) 83
 
Answer & Explanation Answer: A) 87

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1 1058
Q:

The maximum value of 5+20x-4x2, when X is real number

A) 1 B) 5
C) 25 D) 30
 
Answer & Explanation Answer: D) 30

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2 1287
Q:

65.The angles of elevation of an aeroplane flying vertically above the ground, as observed from the two consecutive stones, 1 km apart; are 45o and 60o. The height of the aeroplane from the ground is

A) 3+1 kms B) 3+3 kms
C) 123+1 kms D) 123+3 kms
 
Answer & Explanation Answer: D) 123+3 kms

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1 1284
Q:

If x+1x=-2, then the value of x7+1x7

A) 1 B) -1
C) 0 D) -2
 
Answer & Explanation Answer: D) -2

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5 1270
Q:

The simplified form of (4x + 3)2 . (3x - 5) - (4x3 - 12x2 + 9x - 20) is

A) 6x2- 48x - 50 B) 24x3 + 2x2 - 32x - 15
C) 44x3 + 4x2 - 102x - 25 D) 24x3 + 8x2 - 42x - 50
 
Answer & Explanation Answer: C) 44x3 + 4x2 - 102x - 25

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0 1093