6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

In the following question, correct the equation by interchanging two signs.

4 x 3 – 6 ÷ 2 + 7 = 8

A) – and +	B) x and –
C) ÷ and x	D) x and +

Answer & Explanation Answer: A) – and +

Explanation:

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT

0 65785

Q:

Relation Between Efficiency and Time

A is twice as good a workman as B and is therefore able to finish a piece of work in 30 days less than B.In how many days they can complee the whole work; working together?

Answer

Ratio of times taken by A and B = 1 : 2.

The time difference is (2 - 1) 1 day while B take 2 days and A takes 1 day.

If difference of time is 1 day, B takes 2 days.

If difference of time is 30 days, B takes 2 x 30 = 60 days.

So, A takes 30 days to do the work.

A's 1 day's work = 1/30

B's 1 day's work = 1/60

(A + B)'s 1 day's work = 1/30 + 1/60 = 1/20

A and B together can do the work in 20 days.

Workspace

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Subject: Time and Work

255 65737

Q:

In the following question, select the odd word pair from the given alternatives.

A) Vehicle – Car	B) Scooter – Vehicle
C) Truck – Vehicle	D) Bus – Vehicle

Answer & Explanation Answer: A) Vehicle – Car

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

8 65734

Q:

405 sweets were distributed equally among children in such a way that the number of sweets received by each child is 20% of the total number of children. How many sweets did each child recieve ?

A) 9	B) 10
C) 11	D) 12

Answer & Explanation Answer: A) 9

Explanation:

Let the total number of children be x.

Then, x * (20% of x) = 405

=> x * 20x/100 = 405

$\frac{1}{5} x^{2}$ = 405

=> x=45

Number of sweets received by each child = 20% of 45 = 9.

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Filed Under: Percentage

294 65599

Q:

Find at what time between 8 and 9 o'clock will the hands of a clock be in the same straight line but not together ?

A) 100/11 min past 8	B) 120/11 min past 8
C) 90/11 min past 8	D) 80/11 min past 8

Answer & Explanation Answer: B) 120/11 min past 8

Explanation:

In this type of problems the formulae is $(5 x - 30) \times \frac{12}{11}$
x is replaced by the first interval of given time Here i.e 8
$(5 * 8 - 30) * \frac{12}{11}$
= $\frac{120}{11}$ min

Therefore the hands will be in the same straight line but not
together at $\frac{120}{11}$ min.past 8.

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Filed Under: Clocks
Exam Prep: Bank Exams
Job Role: Bank PO

102 65356

Q:

In the following question, select the odd word pair from the given alternatives.

A) Car – Road	B) Water – Ship
C) Track – Train	D) Sky – Aeroplane

Answer & Explanation Answer: A) Car – Road

Explanation:

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 65142

Q:

What is the value of (sin30° + 1/3) ?

A) (2√2+√3)/2	B) (√6+1)/√3
C) 7/3	D) 5/6

Answer & Explanation Answer: D) 5/6

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 65104

Q:

n is an integer chosen at random from the set

{5, 7, 9, 11 }

p is chosen at random from the set

{2, 6, 10, 14, 18}

What is the probability that n + p = 23 ?

A) 0.1	B) 0.2
C) 0.25	D) 0.3

Answer & Explanation Answer: A) 0.1

Explanation:

Each of the integers in the first set could be combined with any from the second set, giving a total of 4 x 5 = 20 possible pairs.

Of these the combinations that could give a sum of 23 are (5 + 18), and (9 + 14)

Quantitative Aptitude - Arithmetic Ability Questions

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