Square Roots and Cube Roots Questions

Q:

Which of the numbers given below is the square root of 14161?

A) 119 B) 121
C) 131 D) 141
 
Answer & Explanation Answer: A) 119

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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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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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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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Q:

Find the square root of 1485961

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

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Q:

What is the remainder, when 4x4 +10x3-20x2+90 is divided by (x+2) ?

A) 0 B) -6
C) 45 D) 90
 
Answer & Explanation Answer: B) -6

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Q:

What is the square root of (√5 + 2)/(√5 – 2)?

 

A) √5 – √4   B) √5 + 2  
C) 5 + √2   D) 7
 
Answer & Explanation Answer: B) √5 + 2  

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Q:

The cube of 105 is

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

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