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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

The centroid of an equilateral triangle ABC is G. If AB is 6 cms, the length of AG is

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

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Filed Under: Quantitative Aptitude - Arithmetic Ability

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Q:

Which of the following is a reductible fraction?

A) 79/26 B) 105/112
C) 41/17 D) 91/15
 
Answer & Explanation Answer: B) 105/112

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Filed Under: Decimal Fractions
Exam Prep: Bank Exams

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Q:

When 0.151515.....is converted into a fraction, then the result is

A) 5/33 B) 17/33
C) 9/11 D) 7/33
 
Answer & Explanation Answer: A) 5/33

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Filed Under: Decimal Fractions
Exam Prep: Bank Exams

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Q:

There is 40% increase in an amount in 10 years at simple interest. What will be the compound interest of Rs. 30000 after 3 years at the same rate?

A) Rs 3745.92 B) Rs 7491.84
C) Rs 9364.8 D) Rs 5618.88
 
Answer & Explanation Answer: A) Rs 3745.92

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

A certain sum of money becomes 4 times of itself in 30 years at a rate of simple interest. In how many years it will become double of itself at the same rate of simple interest?

A) 20 B) 15
C) 10 D) 12
 
Answer & Explanation Answer: C) 10

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

A solid sphere of radius 6 cm is melted and re-casted into a hollow cylinder of uniform thickness. If the external radius of the base of the cylinder is 5 cm and its height is 32 cm, find the uniform thickness of the cylinder ?

A) 3 cm B) 1.5 cm
C) 1 cm D) 2.5 cm
 
Answer & Explanation Answer: C) 1 cm

Explanation:

Let, inner radius of cylinder be ‘x’ cm.
4/3 π(6)3 = π × 32 (52 − x2)

or, (4 × 6 × 6 × 6) / (3 × 32) = 25 − x2 or, x2 = 25 − 9
or, x = 4 cm
Hence, thickness = 5 – 4 = 1 cm.

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

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Q:

What is the value of (cot30°+ 2/√3) ?

A) 5/√3 B) (1+2√3)/2
C) 5/6 D) 2/√3
 
Answer & Explanation Answer: A) 5/√3

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Filed Under: Simplification
Exam Prep: Bank Exams , CAT

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Q:

If sin ­- 5π/3 = x, then the value of x is

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

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Filed Under: Simplification
Exam Prep: Bank Exams

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