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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

The diameter of a circle is 28 cm find its area?

A) 616 sq cm B) 308 sq cm
C) 154 sq cm D) 77 sq cm
 
Answer & Explanation Answer: A) 616 sq cm

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

What is the Compound interest on Rs. 5000 in 3 years, if the rate of interest is 4% for the first year, 3% for the second year and 2% for the third year?

A) Rs. 435.21 B) Rs. 453.12
C) Rs. 436.12 D) Rs. 463.12
 
Answer & Explanation Answer: D) Rs. 463.12

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Filed Under: Compound Interest
Exam Prep: CAT , Bank Exams , AIEEE

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Q:

If sin(A/2) = x, then the value of x is

A) √[(1 + cosA)/2] B) √[(1 -­ cosA)/2]
C) √[(1 -­ sinA)/2] D) √[(1 + sinA)/2]
 
Answer & Explanation Answer: B) √[(1 -­ cosA)/2]

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

The ratio of present ages of Raman and Lamba is 7 : 5. After 6 years age of Raman will be 48 years. What is the present age (in years) of Lamba?

A) 30 B) 25
C) 35 D) 40
 
Answer & Explanation Answer: A) 30

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Filed Under: Problems on Ages

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Q:

The sum of a non-zero number and ten times its reciprocal is 7. Find the number.

A) 4 B) 3
C) 5 D) 6
 
Answer & Explanation Answer: C) 5

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

Three consecutive integers form the lengths of a right-angled triangle. How many sets of such three consecutive integers is/are possible?

A) Only one B) Only two
C) Only three D) Infinitely many
 
Answer & Explanation Answer: A) Only one

Explanation:

let n-1, n, n+1 be 3 consecutive integers

So

(n+1)^2= n^2+ (n-1)^2

(n+1)^2-(n-1)^2= n^2

4n = n^2

So n = 0 or n = 4

n can’t be 0 as n-1 will be negative then

So 3,4 and 5 is the only triplet formed.

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

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Q:

A shopkeeper increases the price of an object by 40% and then sells it at 25% discount on the marked price. If the selling price of such an object be Rs. 2100, its cost price for the shopkeeper was ?

A) 3000 B) 1500
C) 1750 D) 2000
 
Answer & Explanation Answer: D) 2000

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

The point Q(a,b) is first reflected in y­-axis to Q1 and Q1 is reflected in x­axis to (­-5,3). The co­ordinates of point Q are

A) (­-5,­3) B) (5,-3)
C) (­-5,-3) D) (5,­3)
 
Answer & Explanation Answer: B) (5,-3)

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Filed Under: Simplification
Exam Prep: Bank Exams

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