6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

How many times does the number 5 occur in the range of numbers from 1 to 100?

A) 21	B) 22
C) 20	D) 19

Answer & Explanation Answer: C) 20

Explanation:

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Q:

The point equidistant from the sides of a triangle is called

A) Circumcenter	B) Incentre
C) Orthocentre	D) Centroid

Answer & Explanation Answer: B) Incentre

Explanation:

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Q:

O is the center of the circle and two tangents are drawn from a point P to this circle at points A and B. If ∠AOP = 50°, then what is the value (in degrees) of ∠APB?

A) 60	B) 80
C) 90	D) 100

Answer & Explanation Answer: B) 80

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Q:

The corners of a square of side ‘a’ are cut away so as to form a regular octagon. What is the side of the octagon?

A) a(√2 –1)	B) a(√3 –1)
C) a/√2+2	D) a/3

Answer & Explanation Answer: A) a(√2 –1)

Explanation:

Since we are forming a regular octagon

so AE = AL = FB = BG and so on

So AE = SB = x/√2

AE + EF + FB = side of square = a (Given)

So x/√2 + x + x/√2 = a

X = a/(√2+1) = a(√2 -1)

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Q:

The orthocentre of a triangle is the point where

A) the medians meet	B) the altitudes meet
C) the right bisectors of the sides of	D) the bisectors of the angles

Answer & Explanation Answer: B) the altitudes meet

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Q:

ABCD is a cyclic quadrilateral of which AB is the diameter. Diagonals AC and BD intersect at E. If ∠DBC = 35°, Then ∠AED measures

A) 35°	B) 45°
C) 55°	D) 90°

Answer & Explanation Answer: C) 55°

Explanation:

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Q:

The total surface area of a cube is 73.5 sq.cm. Find its side (in cm).

A) 3.5	B) 4.5
C) 7.5	D) 5.5

Answer & Explanation Answer: A) 3.5

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Q:

What is the value of $\frac{\sqrt[3]{64} \times \sqrt{121}}{\sqrt{289} - \sqrt{169}}$ ?

A) 12	B) 11
C) 1/11	D) 1/12

Quantitative Aptitude - Arithmetic Ability Questions

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