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 Quantitative Aptitude - Arithmetic Ability Questions

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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
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107 52170
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 52161
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 52154
Q:

What should come in place of question mark (?) in the following question?

1234 + 2345 – 3456 + 4567 = ?

A) 4590 B) 4680
C) 4670 D) 4690
 
Answer & Explanation Answer: D) 4690

Explanation:

As per the BODMAS rule, the priority in which the operations should be done is:

Priority wise operations Symbol
B-Bracket ()
O-of of
D-Division /,÷
M-Multiplication *,x
A-Addition +
S-Subtraction -

Note: Addition and subtraction can be treated on same priority (from left to right) when they are in consecutive order. ? = 1234 + 2345 – 3456 + 4567 ? = 3579 - 3456 + 4567 ? = 123 + 4567 ? = 4690

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Filed Under: Simplification

0 52103
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 52068
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 51974
Q:

Aman started a business investing Rs. 70,000. Rakhi  joined him after six months with an amount of Rs. 1,05,000 and Sagar joined them with Rs. 1.4 lakhs after another six months. The amount of profit earned should be distributed in what ratio among Aman, Rakhi and Sagar respectively, 3 years after Aman started the business ?

A) 11 : 13 : 15 B) 11 : 13 : 17
C) 12 : 17 : 18 D) 12 : 15 :16
 
Answer & Explanation Answer: D) 12 : 15 :16

Explanation:

Aman : Rakhi : Sagar = (70000 x 36) : (105000 x 30) : (140000 x 24) = 12 : 15 : 16.

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Filed Under: Partnership

29 51860
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
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6 51846