Quantitative Aptitude - Arithmetic Ability Questions

Q:

10 identical solid spherical balls of radius 3 cm are melted to form a single sphere. In this process 20% of solid is wasted. What is the radius (in cm) of the bigger sphere?

A) 24 B) 12
C) 8 D) 6
 
Answer & Explanation Answer: D) 6

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

The reciprocal of the sum of the reciprocals of 2/9 and 7/10 is

A) 14/83 B) 83/14
C) 90/83 D) 83/90
 
Answer & Explanation Answer: A) 14/83

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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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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Q:

Raghuram sells a machine for Rs 43 lakhs at a loss. Had he sold it for Rs 53 lakh, his gain would have been 7 times the former loss. Find the cost price of the machine.

A) Rs 51.75 lakhs B) Rs 59.14 lakhs
C) Rs 36.75 lakhs D) Rs 44.25 lakhs
 
Answer & Explanation Answer: D) Rs 44.25 lakhs

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The age of Rakhi is twelve times that of her daughter Anubha. If age of Anubha is 3 years now, then what was the age of Rakhi, 2 years earlier?

A) 20 years B) 34 years
C) 30 years D) 36 years
 
Answer & Explanation Answer: B) 34 years

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

The Simplified form of (b3x2a4z3)*(b4x3a3z2)/(a2b4z3) is

A) b2x4a6z B) b3x2a4z3
C) b3x5a5z2 D) bazx
 
Answer & Explanation Answer: C) b3x5a5z2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If a website is selling smartphone at Rs 18,000 which is marked at Rs 25,000, then what is the discount (in %) at which the smartphone is being sold?

A) 25 B) 22
C) 28 D) 20
 
Answer & Explanation Answer: C) 28

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If sin3A = x, then value of x is

A) 3sinA + 4sin3A B) 4sin3A -­ 3sinA
C) 4sin3A + sinA D) 3sinA -­ 4sin3A
 
Answer & Explanation Answer: D) 3sinA -­ 4sin3A

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Filed Under: Simplification
Exam Prep: Bank Exams

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