Quantitative Aptitude - Arithmetic Ability Questions

Q:

Simple interest on a certain sum is 16/25 of the sum. Find the rate percent and time, If both are numerically equal.

A) Rate = 7% and Time = 7 years. B) Rate = 8% and Time = 8 years.
C) Rate = 6% and Time = 6 years. D) Rate = 5% and Time = 5 years.
 
Answer & Explanation Answer: B) Rate = 8% and Time = 8 years.

Explanation:

Let sum = X. Then S.I = 16x/25

 

Let rate = R% and Time = R years.

 

Therefore,  (x * R * R)/100 = 16x/25   =>  R = 40/5 = 8

 

Therefore, Rate = 8% and Time = 8 years.

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Filed Under: Simple Interest
Exam Prep: GRE

112 41326
Q:

Calculate the value of (59881 × 59881 - 49681 × 49681)10200?

 

A) 110956 B) 109562
C) 109652 D) 109662
 
Answer & Explanation Answer: B) 109562

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 41318
Q:

In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C

A) 18 m B) 20 m
C) 27 m D) 9m
 
Answer & Explanation Answer: B) 20 m

Explanation:

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Filed Under: Races and Games

35 41252
Q:

The area of a circle is 616 sq.cm. Find its radius (in cm).

 

A) 14 B) 28
C) 11 D) 22
 
Answer & Explanation Answer: A) 14

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

0 41246
Q:

What is the value of 'x' in 23x - 527x + 108x = -21 ?

 

A) 0.33 B) 1
C) 3 D) 9
 
Answer & Explanation Answer: C) 3

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 41194
Q:

Find the odd man out of the following number series?

222, 271, 308, 332, 348, 357

A) 271 B) 308
C) 332 D) 348
 
Answer & Explanation Answer: B) 308

Explanation:

Here the given series 222, 271, 308, 332, 348, 357 follows a pattern that

222

222 + 49  271

271 + 36 = 307 (NOT 308)

307 + 25 = 332

332 + 16 = 348

348 + 9 = 357

 

Hence, the odd man in the fiven number series is 308.

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1 41180
Q:

Which of the following can be used to illustrate that not all prime numbers are odd? 

 

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

Explanation:

The only even numbers in the list are 2 and 4, but 4 is not a prime. So 2 can be used to illustrate the statement that all primes are not odd.

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Filed Under: Numbers
Exam Prep: GRE

6 41142
Q:

If tan4θ + tan2θ = 2, then sec4θ - sec2θ = ?

 

A) 0 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: C) 2

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 41113