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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Divide Rs. 210 in the ratio 2:3:4:5. Th respective amounts are:

A) 30,45,65&70 B) 30,45,60&75
C) 35,40,60&75 D) 30,40,60&80
 
Answer & Explanation Answer: B) 30,45,60&75

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

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Q:

Find the least common multiple of 15 and 12?

A) 3 B) 12
C) 30 D) 60
 
Answer & Explanation Answer: D) 60

Explanation:

The least common multiple of 12 and 15 is

12 = 2 x 2 x 3

15 = 3 x 5

 

LCM of 12 and 15 is  2 x 2 x 3 x 5 = 60.

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Filed Under: HCF and LCM
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

11 2986
Q:

The product of two 2-digit numbers is 2160 and their H.C.F. is 12. The numbers are

A) (12, 60) B) (72, 30)
C) (36, 60) D) (60, 72)
 
Answer & Explanation Answer: C) (36, 60)

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Filed Under: HCF and LCM
Exam Prep: Bank Exams

22 2984
Q:

In a computer game, a builder can build a wall in ten hours while a destroyer can demolish such a wall completely in fourteen hours. Both, the builder and the destroyer were initially set to work together on level ground. But after 7 hours the destroyer was taken out. What was the total time (in hrs) taken to build the wall ?

A) 17 B) 15
C) 24 D) 35
 
Answer & Explanation Answer: B) 15

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

5 2984
Q:

Two equal arcs of two circles subtend angle of  60° and 75° at the centre. The ratio of the radii of the two circles is

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

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: GATE , Bank Exams , AIEEE

0 2983
Q:

In the given figure, PQRS is a rectangle and a semicircle with SR as diameter is drawn. A circle is drawn as shown in the figure. If QR = 7 cm, then what is the radius (in cm) of the small circle ?

 

A) 21 + 14√2 B) 21 – 14√2
C) Both 21 + 14√2 and 21 – 14√2 D) None of these
 
Answer & Explanation Answer: B) 21 – 14√2

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Filed Under: Area
Exam Prep: Bank Exams

1 2979
Q:

What is the value of cosec 11π/6?

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

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Filed Under: Simplification
Exam Prep: Bank Exams

1 2978
Q:

An article costs Rs 50 presently. The rate of inflation is 300%. What will be cost of this article after two years?

A) Rs 200 B) Rs 600
C) Rs 800 D) Rs 1000
 
Answer & Explanation Answer: C) Rs 800

Explanation:

A = P(1 + r/100)n   ⇒50(1 + 300/100)2   ⇒50(4)2  ⇒800

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Filed Under: Compound Interest
Exam Prep: Bank Exams

5 2976