Quantitative Aptitude - Arithmetic Ability Questions

Q:

If A and B are the roots of the equation Ax2  A2x + AB = 0, then what is the value of A and B respectively?

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

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Q:

If 5x ­- 3(4 ­ x) < 4x -­ 4 < 4x + 2x/3; then the value of x is

A) -7 B) 3
C) 4 D) 1
 
Answer & Explanation Answer: D) 1

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Q:

Atul can do a piece of work in 18 days, Aaravya is 50% more efficient than Atul. How much more time does Atul take than Aaravya to do the same piece of work?

A) 12 B) 6
C) 18 D) 10
 
Answer & Explanation Answer: B) 6

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Q:

In ΔPQR, ∠R = 54°, the perpendicular bisector of PQ at S meets QR at T. If ∠TPR = 46°, then what is the value (in degrees) of ∠PQR?

A) 25 B) 40
C) 50 D) 60
 
Answer & Explanation Answer: B) 40

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Q:

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

A) 32 days B) 28 days
C) 29 days D) 30 days
 
Answer & Explanation Answer: D) 30 days

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Q:

The time taken by a train 160 m long, running at 72 km/hr, in crossing an electric pole is

A) 8 sec B) 9 sec
C) 6 sec D) 4 sec
 
Answer & Explanation Answer: A) 8 sec

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Q:

If a cylinder of radius 4.3 cm and height 4.8 cm is melted and constructed into a cone of the same radius, what will be the height of this cone? (Use π = 22/7)

A) 28.8 cm B) 14.4 cm
C) 7.2 cm D) 21.6 cm
 
Answer & Explanation Answer: B) 14.4 cm

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Q:

If x – y – √18 = –1 and x + y – 3√2 = 1, then what is the value of 12xy(x2  y2)?

A) 0 B) 1
C) 512√2 D) 612√2
 
Answer & Explanation Answer: D) 612√2

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