6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

A sum of money amounts to Rs.6690 after 3 years and to Rs.10,035 after 6 years on compound interest.find the sum.

A) 4360	B) 4460
C) 4560	D) 4660

Answer & Explanation Answer: B) 4460

Explanation:

Let the sum be Rs.P.then
P(1+R/100)^3=6690…(i) and P(1+R/100)^6=10035…(ii)
On dividing,we get (1+R/100)^3=10025/6690=3/2.
Substituting this value in (i),we get:
P*(3/2)=6690 or P=(6690*2/3)=4460
Hence,the sum is rs.4460.

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

270 74749

Q:

40% of 75 + 80% of 25 = K% of 250

Find the value of K?

A) 10	B) 20
C) 30	D) 35

Answer & Explanation Answer: B) 20

Explanation:

From the given data,

$\frac{40}{100} x 75 + \frac{80}{100} x 25 = \frac{K}{100} x 250 30 + 20 = \frac{5 K}{2} 50 x 2 = 5 K K = \frac{100}{5} = 20$

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

12 74723

Q:

A thief is noticed by a policeman from a distance of 200 m. The thief starts running and the policeman chases him. The thief and the policeman run at the rate of 10 km and 11 km per hour respectively. What is the distance between them after 6 minutes?

A) 100 m	B) 150 m
C) 190 m	D) 200 m

Answer & Explanation Answer: A) 100 m

Explanation:

Relative speed of the thief and policeman = (11 – 10) km/hr = 1 km/hr

Distance covered in 6 minutes = (1/60) x 6 km = 1/10 km = 100 m

Therefore, Distance between the thief and policeman = (200 – 100) m = 100 m.

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Filed Under: Time and Distance

250 73961

Q:

What number should replace the question mark?

125, 138, 164, ?, 255

A) 189	B) 197
C) 200	D) 203

Answer & Explanation Answer: D) 203

Explanation:

The given number series is 125, 138, 164, ?, 255

125

125 + 13x1 = 138

138 + 13x2 = 164

164 + 13x3 = 203

203 + 13x4 = 255

Hence, the missing number in the series is 203.

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Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

5 73084

Q:

ΔXYZ is right angled at Y. If sinX = 12/13, then what is the value of cosecZ ?

A) 5/12	B) 5/13
C) 13/5	D) 13/12

Answer & Explanation Answer: C) 13/5

Explanation:

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Filed Under: Area
Exam Prep: Bank Exams

0 72884

Q:

Find the odd man out.

253, 136, 352, 324, 631, 244

A) 324	B) 136
C) 352	D) 631

Answer & Explanation Answer: A) 324

Explanation:

The Sum of the digits in each number, Except 324 is 10.

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Filed Under: Odd Man Out

41 72679

Q:

If $x^{2} + kx + k = 0$ has no solution, then the value of k will satisfy

A) k < 4	B) k > -4
C) k > 4	D) 0 < k < 4

Answer & Explanation Answer: D) 0 < k < 4

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams
Job Role: Bank Clerk

7 72430

Q:

If log 2 = 0.3010 and log 3 = 0.4771, the values of log₅ 512 is

A) 2.875	B) 3.875
C) 4.875	D) 5.875

Answer & Explanation Answer: B) 3.875

Explanation:

ANS: log₅512 = log512/log5 = $\frac{\log 2^{9}}{\log (10 / 2)}$ = $\frac{9 \log 2}{\log 10 - \log 2}$ = $\frac{9 * 0.3010}{1 - 0.3010}$ =2.709/0.699 =2709/699 =3.876

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

208 72352

Quantitative Aptitude - Arithmetic Ability Questions

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