8
Q:

What should come in place of x in the following equation?

 x128 = 162x

A) 13 B) 12
C) 17 D) 16

Answer:   B) 12



Explanation:

x128 = 162x

 

Then x2 = 162x128

  

   = Sqrt of 82 x 62 x 32

 

   = 8 x 6 x 3

 

   x2  = 144.

 

 x  = 12.

Subject: Square Roots and Cube Roots
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Q:

Find the square root of 1485961

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

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1 1269
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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4 1317
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 1070
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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Exam Prep: Bank Exams

1 1062
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 1290
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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Exam Prep: Bank Exams

1 1286
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 1274
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 1100