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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Which of the following numbers is irrational?

 

A) 643 B) √64
C) 646 D) 644
 
Answer & Explanation Answer: D) 644

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

3 14613
Q:

On 17th March, 1997 Monday falls. What day of the week was it on 17th March, 1996?

A) Monday B) Tuesday
C) Saturday D) Wednesday
 
Answer & Explanation Answer: C) Saturday

Explanation:

The year 1996 is a leap year. So, it has 2 odd days. So, the day on 17th March, 1997 will be 2 days beyond the day on 17th March,1996.

Here 17th March, 1997 is Monday. So, 17th March, 1996 is Saturday.

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Filed Under: Calendar

50 14604
Q:

In a factory there are three types of Machines M1 , M2 and M3 which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2% , 4% and 5% defective products, respectively. What is the percentage of non-defective products?

A) 89% B) 97.1%
C) 96.1% D) 86.1%
 
Answer & Explanation Answer: C) 96.1%

Explanation:

Non- defective products

 

25x0.98+35x0.96+40x0.95100 x 100 = 96.1

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

22 14578
Q:

What is the ratio whose terms differ by 40 and the measure of which is 2/7 ?

A) 16:56 B) 14:56
C) 15:56 D) 16:72
 
Answer & Explanation Answer: A) 16:56

Explanation:

Let the ratio be x : (x + 40), then ,

 

 

 

xx+40=27 

 

 7x = 2x + 80 

 

 x = 16 

 

Required ratio = 16 : 56

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Filed Under: Ratios and Proportions

35 14575
Q:

What is the third proportional to 16 and 36 ?

Answer

Let  \inline 6:8::15:x


\inline 16x=36\times 36


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Subject: Ratios and Proportions

73 14574
Q:

Two numbers are in the ratio of 15 : 11.If their HCF is 13. Find  the numbers.

 

A) 195, 143 B) 196, 143
C) 195, 141 D) 195, 142
 
Answer & Explanation Answer: A) 195, 143

Explanation:
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Filed Under: HCF and LCM
Exam Prep: Bank Exams

6 14568
Q:

If x : y = 1 : 3, then what will be the ratio of (3y2 + 3x2) : (2y2 - 8x2)?

 

A) 4 : 1   B) 2 : 1  
C) 3 : 1   D) 5 : 1
 
Answer & Explanation Answer: C) 3 : 1  

Explanation:
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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

1 14564
Q:

LCM of 252, 308 and 198 is

A) 1443 B) 2124
C) 2545 D) 2772
 
Answer & Explanation Answer: D) 2772

Explanation:

Prime factors of 

252 = 2 x 2 x 3 x 3 x 7; 

308 = 2 x 2 x 7 x 11; 

198 = 2 x 3 x 3 x 11

Therefore LCM of 252, 308 and 198 is 2 x 2 x 3 x 3 x 7 x 11 = 4 x 9 x 77 = 2772.

 

 

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

22 14562