6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Factorise $x^{2} + 3 x - 18$

A) (x+18)(x-1)	B) (x-1)(x+18)
C) (x+6)(x-3)	D) (x-6)(x+3)

Answer & Explanation Answer: C) (x+6)(x-3)

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Q:

Select the odd number from the given alternatives.

A) 18	B) 45
C) 54	D) 55

Answer & Explanation Answer: D) 55

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Q:

What is the value of sec 4π/3?

A) 2	B) -2
C) 2/√3	D) -2/√3

Answer & Explanation Answer: B) -2

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Q:

Find the area (in cm²) of a semi-circle of radius 21 cm.

A) 1386	B) 960
C) 693	D) 1920

Answer & Explanation Answer: C) 693

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Q:

A bank offers 10% compound interest per half year. A customer deposits Rs. 2000 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is

A) Rs 1240	B) Rs 310
C) Rs 155	D) Rs 620

Answer & Explanation Answer: D) Rs 620

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Q:

What is the value of $\cos^{2} A / (1 + sinA) ?$

A) 1 + sinA	B) 1 - sinA
C) 1 - secA	D) 1 + secA

Answer & Explanation Answer: B) 1 - sinA

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Q:

What is the simplified value of $\sqrt{\frac{{(0.04)}^{2} + {(0.21)}^{2} - 0.0084}{{(0.04)}^{3} + {(0.21)}^{3}}}$

A) 0.5	B) 2
C) 10.25	D) 10.3

Answer & Explanation Answer: B) 2

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Q:

ΔPQR is right angled at Q. If m∠R = 45°, then find the value of (tanP - 1/2).

A) (2-√3)/√3	B) (2√3-√6)/2√2
C) 1/2	D) (√6-6)/3√3

Quantitative Aptitude - Arithmetic Ability Questions

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