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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

ΔABC is similar to ΔPQR. Length of AB is 36 cm and length of the corresponding side PQ is 16 cm. If area of ΔABC is 1296 sq cm, what is the area of ΔPQR?

A) 128 sq cm B) 512 sq cm
C) 64 sq cm D) 256 sq cm
 
Answer & Explanation Answer: D) 256 sq cm

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Q:

Two equal circles intersect so that their centres, and the points at which they intersect form a square of side 1 cm. The area (in sq.cm) of the portion that is common to the circles is

A) π4 B) π2-1
C) π5 D) √2 - 1
 
Answer & Explanation Answer: B) π2-1

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Q:

Which of the following is correct?

A) (4x - 5y)2 = 16x2 - 20xy + 25y2 B) (4x - 5y)2 = 16x2 + 40xy - 25y2
C) (4x - 5y)2 = 16x2  - 40xy + 25y2 D) (4x - 5y)2  = 16x2 - 20xy - 25y2
 
Answer & Explanation Answer: C) (4x - 5y)2 = 16x2  - 40xy + 25y2

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Q:

An engineering student has to secure 25% marks to pass. He gets 56 and fails by 34 marks. Find the maximum marks.

A) 385 marks B) 360 marks
C) 410 marks D) 435 marks
 
Answer & Explanation Answer: B) 360 marks

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Q:

∆ABC is right angled at B. If m∠A = 30°, then find the value of (sinC + 1/3).

A) 4/3 B) (√3+1)/2
C) (√3+2)/√3 D) (3√3+2)/6
 
Answer & Explanation Answer: D) (3√3+2)/6

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Q:

If cosx.cosy + sinx.siny = -1 then cosx + cosy is

A) -2 B) 1
C) 0 D) 2
 
Answer & Explanation Answer: C) 0

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Q:

Sum of two numbers is thrice their difference. Their ratio is

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

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Q:

The curved surface area and the diameter of a right circular cylinder are 660 sq.cm and 21 cm respectively. Find its height (in cm).

 

A) 9 B)  10
C) 12 D) 8
 
Answer & Explanation Answer: B)  10

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