Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the reflection of the point (5, -2) in the line y = -1?

A) (-7 , -2) B) (-5 , 0)
C) (5 , 0) D) (-7 , 2)
 
Answer & Explanation Answer: C) (5 , 0)

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Q:

If 2+aa + 2+bb + 2+cc = 4, then the value of ab+bc+caabc is

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

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Q:

Δ LMN is right angled at M. If m∠N = 60°, then Tan L =______.

A) 1/2 B) 1/√3
C) 1/√2 D) 2
 
Answer & Explanation Answer: B) 1/√3

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Q:

If cos 45° - ­ sec 30° = x, then value of x is

A) (1+√2)/2 B) (2√2­√3)/2
C) (√3­2√2)/√6 D) 4/√3
 
Answer & Explanation Answer: C) (√3­2√2)/√6

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Q:

If two marbles are picked at random, what is the probability that either both are red or both are green?

A) 5/7 B) 5/14
C) 1/7 D) 1/14
 
Answer & Explanation Answer: C) 1/7

Explanation:

Required probability = (10+3)91=1391=17

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Q:

The line passing through (-2,5) and (6,b) is perpendicular to the line 20x + 5y = 3. Find b?

A) -7 B) 4
C) 7 D) -4
 
Answer & Explanation Answer: C) 7

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Q:

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

A) 0 B) -1
C) 2 D) 3
 
Answer & Explanation Answer: B) -1

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Q:

If 6x + 4(2-x) > 3x -2 > 5x/2 - x/4; then value of x is

A) 0 B) 1
C) 3 D) 2
 
Answer & Explanation Answer: C) 3

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