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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Find the compound interest on Rs. 16,000 at 20% per annum for 9 months, compounded quarterly

A) 2422 B) 2522
C) 2622 D) 2722
 
Answer & Explanation Answer: B) 2522

Explanation:

Principal = Rs. 16000; Time = 9 months =3 quarters;
Rate = 20% per annum = 5% per quarter.
Amount = Rs. [16000 x (1+(5/100))3] = Rs. 18522.

 

 

 

CJ. = Rs. (18522 - 16000) = Rs. 2522

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

89 52215
Q:

Solve the following :

 

196 - 19.6 - 1.96 - 0.196 = ?

 

A) 173.254 B) 173.234
C) 174.234 D) 174.244
 
Answer & Explanation Answer: D) 174.244

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 52197
Q:

Find out the wrong number in the following series:

5, 15, 30, 80, 180, 540, 1080

A) 540 B) 180
C) 30 D) 80
 
Answer & Explanation Answer: D) 80

Explanation:

There should be 90 instead of 80
so we can have a series
5, 5x3, 15x2, 30x3, 90x2, 180x3, 540x2 and 1080x3 and so on...

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

6 52193
Q:

How much time will take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest  ?

A) 4 years B) 2.5 years
C) 3.5 years D) 2 years
 
Answer & Explanation Answer: A) 4 years

Explanation:

Time = (100 x 81) / (450 x 4.5) = 4 years.

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Filed Under: Simple Interest
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

107 52173
Q:

In a 1 km race, A beats B by 28 meters in 7sec. Find A's time over the course?

A) 5min,4sec B) 4min,3sec
C) 2min,3sec D) 3min,4sec
 
Answer & Explanation Answer: B) 4min,3sec

Explanation:

B covers 28 meters in 7sec. So, B's time over the course = (7/28)*100 =250 sec.

 

Whereas A's time over the course = 250 -7 = 243 sec.

 

i.e A's time over the course is 4min , 3 sec.

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Filed Under: Races and Games

83 52165
Q:

Three unbiased coins are tossed. What is the probability of getting at most two heads?

A) 3/4 B) 7/8
C) 1/2 D) 1/4
 
Answer & Explanation Answer: B) 7/8

Explanation:

Here S = {TTT, TTH, THT, HTT, THH, HTH, HHT, HHH}

Let E = event of getting at most two heads.

Then E = {TTT, TTH, THT, HTT, THH, HTH, HHT}.

P(E) =n(E)/n(S)=7/8.

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Filed Under: Probability

81 52157
Q:

If (x - 7)2 + (y + 10)2 + (z - 6)2 = 0, then find the value of x + y + z.

 

A) 1 B) 3
C) 5 D) 7
 
Answer & Explanation Answer: B) 3

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

1 52065
Q:

Which of the following statement(s) is/are TRUE?

I. 3/71 < 5/91 < 7/99
II. 11/135 > 12/157 > 13/181

A) Only I B) Only II
C) Both I and II D) Neither I nor II
 
Answer & Explanation Answer: C) Both I and II

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

5 51920