Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average cost of 4 items in a shopping list is Rs 1,250. If one more item whose cost is Rs 2,000 is added to the list what will be the new average (in
Rs)?

A) 1100 B) 1500
C) 1400 D) 1250
 
Answer & Explanation Answer: C) 1400

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Filed Under: Average
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Q:

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If lengths of PS, SQ and PR are 6 cm, 9 cm and 12.5 cm respectively, what is the length of TR?

A) 7.5 cm B) 5 cm
C) 10 cm D) 2.5 cm
 
Answer & Explanation Answer: A) 7.5 cm

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Filed Under: Volume and Surface Area
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Q:

The total surface area of a hemisphere is 4158 cm2. Find its diameter (in cm).

A) 21 B) 84
C) 42 D) 63
 
Answer & Explanation Answer: B) 84

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Filed Under: Volume and Surface Area
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Q:

If cosecA - cotA = x, then the value of x is

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

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Q:

What is the value of 1sin490-θ+1cos290-θ - 1 ?

A) tan2θ sec2θ B) sec4θ
C) tan4θ D) tan2θ sin2θ
 
Answer & Explanation Answer: A) tan2θ sec2θ

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Filed Under: Simplification
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Q:

For which value of ‘g’ the linear graph of 6x + 12y +9 = 0 and 2x + gy + 3 =0 has infinite number of solutions?

A) 3 B) 4
C) 6 D) 9
 
Answer & Explanation Answer: B) 4

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Q:

The diagonal of a square is 12 cm what is the length (in cm) of its side?

A) 6√2 B) 12√2
C) 6 D) 9
 
Answer & Explanation Answer: A) 6√2

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Filed Under: Area
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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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