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Q:

The sum of the squares of 3 natural numbers is 1029, and they are in the proportion 1 : 2 : 4. The difference between greatest number and smallest number is:

 

A) 15 B) 21
C) 31 D) 18

Answer:   B) 21



Explanation:
Q:

If sqrt x + frac{1}{sqrt x} = 2sqrt2, then x^2 + frac{1}{x^2} is equal to:

 

A) 36 B) 34
C) 32 D) 64
 
Answer & Explanation Answer: B) 34

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2 42
Q:

If 'J' is coded as '20' and 'BAT” is coded as '46' then how will 'CRICKET' be coded?

A) 138 B) 158
C) 142 D) 140
 
Answer & Explanation Answer: A) 138

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1 150
Q:

What is the value of x so that the seven digit number 8439x53 is divisible by 99?

 

A) 9 B) 4
C) 3 D) 6
 
Answer & Explanation Answer: B) 4

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0 542
Q:

△ABC ∼ △NLM and ar(△ABC): ar(△NLM) = 4 : 9. If AB = 6 cm, BC = 8 cm and AC =12 cm, then ML is equal to:

 

A) 18 cm B) 9 cm
C) 6 cm D) 12 cm
 
Answer & Explanation Answer: D) 12 cm

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0 432
Q:

If (5a - 3b) : (4a - 2b) = 2 : 3, then a : b is equal to:

 

A) 3 : 4 B) 2 : 3
C) 5 : 8 D) 5 : 7
 
Answer & Explanation Answer: D) 5 : 7

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1 404
Q:

What is the value of x so that the seven digit number 55350x2 is divisible by 72?

 

A) 1 B) 8
C) 7 D) 3
 
Answer & Explanation Answer: C) 7

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0 482
Q:

Walking frac{5}{7} of his usual speed, a person reaches his office 10 minutes later than the usual time. His usual time in minutes is:

 

A) 28 B) 30
C) 25 D) 35
 
Answer & Explanation Answer: C) 25

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0 94
Q:

If a + b + c = 8 and ab + bc + ca = 20, then a^3 + b^3 + c^3 - 3abc is equal to:

 

A) 30 B) 24
C) 32 D) 36
 
Answer & Explanation Answer: C) 32

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0 1083