Quantitative Aptitude - Arithmetic Ability Questions

Q:

In a circle, two arcs of unequal length subtend angles in the ratio 5:3. If the smaller angle is 45° then the measure of other angle in degrees.

A) 75° B) 72°
C) 60° D) 78°
 
Answer & Explanation Answer: A) 75°

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Q:

If cosA = x, then x is

A) √(1 - cos2A) B) √(1 + sin2A)
C) √(1 + cos2A) D) √(1 - sin2A)
 
Answer & Explanation Answer: D) √(1 - sin2A)

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Q:

How many natural numbers are there between 1000 to 2000, which when divided by 341 leaves remainder 5?

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

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Q:

Three solid spheres have their radii r1, r2 and r3. The spheres are melted to form a solid sphere of bigger radius. Then the radius of the new sphere is

A) r1+r2+r3 B) r12+r22+r3212
C) r13+r23+r3313 D) r14+r24+r3414
 
Answer & Explanation Answer: C) r13+r23+r3313

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Q:

The average of three numbers is 40. First number is 4/3 of the third number. If third number is 20 less than second number, then what is the value of second number?

A) 60 B) 50
C) 10 D) 20
 
Answer & Explanation Answer: B) 50

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Q:

What is the average of 36, 43, 51, 68, and 77?

A) 47 B) 49
C) 55 D) 64
 
Answer & Explanation Answer: C) 55

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Q:

What is the value of sin(11π/6)?

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

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Q:

A number is divided into two parts in such a way that 30% of first part is 25 more than the 20% of second part. 50% of second part is 33.5 more than the 60% of first part. What is the number?

 

A) 1475 B) 1655
C) 1425 D) 1905
 
Answer & Explanation Answer: A) 1475

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Filed Under: Percentage
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