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1
Q:

For any two real numbers a and b.

a-b2+b-a2 is

A) always zero B) never zero
C) positive only if a ≠ b D) positive if an only if a > b

Answer:   C) positive only if a ≠ b



Explanation:
Subject: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams
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If tan(A/2) = x, then the value of x is

A) (1 - cosA)/sinA B) (1 + cosA)/sinA
C) √[(1 - cosA)/sinA] D) √[(1 + cosA)/sinA]
 
Answer & Explanation Answer: A) (1 - cosA)/sinA

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If sec -7π/4 = x, then the value of x is

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

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Q:

If in a two digit number, the digit at unit place is y and the digit at tens place is 5, then the number is

A) 50y + y B) 5y + 5
C) 50 + y D) 50y + 5
 
Answer & Explanation Answer: C) 50 + y

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Q:

What is the value of sin ­7π/4c?

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

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1 1008
Q:

√(cosec2 -­ 1)/cosecA is equal to?

A) cosA B) sinA
C) cosecA D) secA
 
Answer & Explanation Answer: A) cosA

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Q:

Find measure of central angle of the sector whose perimeter is 25 cm and radius of the circle is 7 cm?

A) 45° B) 22.5°
C) 135° D) 90°
 
Answer & Explanation Answer: D) 90°

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0 1134
Q:

­ What is the equation of the line if its slope is 3/4 and y­intercept is 5?

A) 3x + 4y = ­-20 B) 3x + 4y = 20
C) 3x ­- 4y = ­-20 D) 3x ­- 4y = 20
 
Answer & Explanation Answer: C) 3x ­- 4y = ­-20

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0 839
Q:

If r sinθ=3 and r cosθ=1, then the values of r and θ are: (0°⩽θ≤90°)

A) r=1, θ=30° B) r=1⁄2, θ=30°
C) r=3 , θ=30° D) r=2, θ=60°
 
Answer & Explanation Answer: D) r=2, θ=60°

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