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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

L.C.M of two prime numbers x and y (x>y) is 161. The value of 3y-x is :

A) -2 B) -1
C) 1 D) 2
 
Answer & Explanation Answer: A) -2

Explanation:

 H. C. F of two prime numbers is 1.  Product of numbers = 1 x 161 = 161.

 Let the numbers be a and b . Then , ab= 161.

 Now, co-primes with  product 161 are (1, 161) and (7, 23).

 Since x and y are prime numbers and x >y , we have x=23 and y=7.

 Therefore,  3y-x = (3 x 7)-23 = -2

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119 50110
Q:

1960.196=19.6xthen what will be the value of x?

 

A) 1.96 B)  10.96
C)  0.0196 D) 0.196
 
Answer & Explanation Answer: C)  0.0196

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 50078
Q:

Solve the following

 

24 / (20 - 12 / 3 x 8) = ?

A) -2 B) -3
C) 6 D) 3
 
Answer & Explanation Answer: A) -2

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 49975
Q:

What is the square root of (√5 + 2)/(√5 – 2)?

 

A) √5 – √4   B) √5 + 2  
C) 5 + √2   D) 7
 
Answer & Explanation Answer: B) √5 + 2  

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

1 49936
Q:

Simplify : 528 ÷ 2835 ÷ 20112

 

A) 4/5 B) 5/4
C) 4/7 D) 7/4
 
Answer & Explanation Answer: B) 5/4

Explanation:
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Exam Prep: Bank Exams

1 49872
Q:

In the following question, select the odd word from the given alternatives.

 

 

A) Rhombus B) Cylinder
C) Cone D) Sphere
 
Answer & Explanation Answer: A) Rhombus

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 49867
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 49762
Q:

Find the odd man out of the following number sequence?

3, 5, 13, 43, 167

A) 167 B) 43
C) 13 D) 5
 
Answer & Explanation Answer: A) 167

Explanation:

The given number series is 3, 5, 13, 43, 167

3

3 x 1 + 2 = 5

5 x 2 + 3 = 13

13 x 3 + 4 = 43

43 x 4 + 5 = 177 (not equal to 167)

 

Hence, the odd number in the given number sequence is 167. 

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Filed Under: Odd Man Out
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3 49751