6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?

A) 219	B) 137
C) 231	D) 279

Answer & Explanation Answer: D) 279

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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

A helicopter, at an altitude of 1500 m, finds that two ships are sailing towards it, in the same direction. The angles of depression of the ships as observed from the helicopter are 60° and 30°respectively. Distance between the two ships, in metres is

A) 1000√3	B) 1000/√3
C) 500√3	D) 500/√3

Answer & Explanation Answer: A) 1000√3

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Filed Under: Height and Distance
Exam Prep: Bank Exams

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Q:

Which of the following statements is not true?

A) The difference of two prime numbers, both greater than 2, is divisible by 2	B) For two different integers m, n and a prime number p, if p divides the product m × n, then p divides either m or n.
C) If a number is of the form 6n –1 (n being a natural number), then its is a prime number.	D) There is only one set of three prime numbers such that there is a gap of 2 between two adjacent prime numbers.

Answer & Explanation Answer: D) There is only one set of three prime numbers such that there is a gap of 2 between two adjacent prime numbers.

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Filed Under: Numbers
Exam Prep: Bank Exams

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Q:

In the following question, select the odd letter from the given alternatives.

A) B	B) N
C) P	D) W

Answer & Explanation Answer: D) W

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

If $2 r = h + \sqrt{r^{2} + h^{2}}$ , then the ratio of r:h is

A) 1 : 2	B) 2 : 3
C) 4 : 3	D) 3 : 5

Answer & Explanation Answer: C) 4 : 3

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is

A) 2 hrs	B) 3 hrs
C) 4 hrs	D) 7 hrs

Answer & Explanation Answer: C) 4 hrs

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Filed Under: Boats and Streams
Exam Prep: Bank Exams

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Q:

The area of an equilateral triangle is 9√3 sq cm, find its perimeter?

A) 18 cm	B) 9 cm
C) 9√3 cm	D) 6√3 cm

Answer & Explanation Answer: A) 18 cm

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

When a number is increased by 18, it becomes 106% of itself. What is the number?

A) 300	B) 216
C) 270	D) 162

Quantitative Aptitude - Arithmetic Ability Questions

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