6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Assume that money can be invested at 8% compounded quarterly,which is larger,$2500 now or $3800 in 5 years?

A) 1557.29	B) 2557.29
C) 2567	D) 2457

Answer & Explanation Answer: B) 2557.29

Explanation:

First find the present value of $3800,then compare present values:

M = p(1+i/4)^4n

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Filed Under: Compound Interest
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2 3810

Q:

Find the average of first 50 natural numbers?

A) 25	B) 25.5
C) 26	D) 26.5

Answer & Explanation Answer: B) 25.5

Explanation:

We Know that sum of the n natural numbers = $\frac{n (n + 1)}{2}$

Then sum of 50 natural numbers= $\frac{50 (51)}{2}$ = 1250

Average of the 50 natural numbers = $\frac{1250}{50}$ = 25.5

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Filed Under: Average
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22 3809

Q:

In how many ways word of 'GLACIOUS' can be arranged such that 'C' always comes at end?

A) 3360	B) 5040
C) 720	D) 1080

Answer & Explanation Answer: B) 5040

Explanation:

Given word is GLACIOUS has 8 letters.

=> C is fixed in one of the 8 places

Then, the remaining 7 letters can be arranged in 7! ways = 5040.

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Filed Under: Permutations and Combinations
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2 3809

Q:

Rs. 2018 are to be divided among P, Q and R in such a way that if P gets Rs. 5 then Q must get Rs. 12 and if Q gets Rs. 4 then R must get Rs. 5.50. The share of R will exceed that of Q by

A) Rs. 127	B) Rs. 271
C) Rs. 721	D) Rs. 217

Answer & Explanation Answer: B) Rs. 271

Explanation:

ATQ,

P : Q = 5 : 12 = 10 : 24

Q : R = 4 : 5.5 = 24 : 33

P:Q:R = 10 : 24 : 33

Sum of the ratios = 10 + 24 + 33 = 67

Difference between the share of R & Q

= (33-24/67 x 2018)

= 9/67 x 2018

= Rs. 271.

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Filed Under: Partnership
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9 3802

Q:

If length of a rectangle is decreased by 6 cm we get a square and the area of square formed is 252 cm2 less than the area of square formed when breadth of the original rectangle is increased by 6 cm. Find the perimeter of the rectangle.

A) 66 cm	B) 88 cm
C) 80 cm	D) 72 cm

Answer & Explanation Answer:

Explanation:

Let length and breadth of rectangle be L cm
and B cm respectively So, ATQ
Area1= (L-6)×B
But this is square, so L-6=B
Area1= (L-6) × (L-6)
Case 2, Area2= L × (B+6),
L=B+6
So, Area2= L × L,
Given, Area2-Area1= 252(L)2-(L-6)2=252
Solving this, L= 24
B= 18
Perimeter= 2(L+B)= 2(24+18)= 84 cm

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

3 3798

Q:

16 persons are participated in a party. In how many differentways can they host the seat in a circular table, if the 2particular persons are to be seated on either side of the host?

A) 16! × 2	B) 14! × 2
C) 18! × 2	D) 14!

Answer & Explanation Answer: B) 14! × 2

Explanation:

(16 – 2)! × 2 = 14! × 2

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Filed Under: Permutations and Combinations
Exam Prep: Bank Exams

4 3786

Q:

In the given number series which follows the definite rules then find out the value of (M, N, O, and P) in second number series.

7 18 42 94 204

4 M N O P

What value will come in place of P?

A) 179	B) 184
C) 164	D) 156

Answer & Explanation Answer: D) 156

Explanation:

Here the given series 7 18 42 94 204 follows a pattern that,

7

7 ×2+4 = 18

18 ×2+6 = 42

42 ×2+10 = 94

94 ×2+16 = 204

Similarly,

4

4 ×2+4 = 12

12 ×2+6 = 30

30 ×2+10 = 70

70 ×2+16 = 156

Hence, the value of P = 156.

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Filed Under: Odd Man Out
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8 3785

Q:

Aarush's birthday is on Thursday 27th April. On what day of the week will be Mitul's Birthday in the same year if Mitul was born on 28th September?

A) Monday	B) Thursday
C) Wednesday	D) Tuesday

Quantitative Aptitude - Arithmetic Ability Questions

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