Quantitative Aptitude - Arithmetic Ability Questions

Q:

If xy = 56 and x2+ y2= 113, then what will be the value of (x + y)?

A) 29 B) 21
C) 36 D) 15
 
Answer & Explanation Answer: D) 15

Explanation:
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Q:

If the true discount on sum due 2 years hence at 14% per annum be Rs. 168, the sum due is

A) Rs. 600 B) Rs. 768
C) Rs. 878 D) Rs. 668
 
Answer & Explanation Answer: B) Rs. 768

Explanation:

We know that,

P.W = 100×T.D/R×T

= 100×168/14×2

P.W = 600.

 

Now, required Sum = (P.W. + T.D.)

= Rs. (600 + 168)

= Rs. 768.

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Filed Under: True Discount
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Q:

What is the value of cosec -150°?

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

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Q:

If length of each side of a rhombus PQRS is 8 cm and ∠PQR = 120°, then what is the length (in cm) of QS?

A) 4√5 B) 6
C) 8 D) 12
 
Answer & Explanation Answer: C) 8

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Filed Under: Area

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Q:

A train 500 m long, running at a uniform speed, passes a station in 35 sec. If the length of the platform is 221 m, the speed of the train in km/hr is

A) 721/35 B) 74.16
C) 24.76 D) 78.54
 
Answer & Explanation Answer: B) 74.16

Explanation:
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Filed Under: Problems on Trains
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Q:

When a discount of 20% is given on a jacket, the profit is 28%. If the discount is 13%, then the profit is

A) 39.2 percent B) 41 percent
C) 42.8 percent D) 37.4 percent
 
Answer & Explanation Answer: A) 39.2 percent

Explanation:
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Filed Under: Profit and Loss
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Q:

A gun is fired at a distance of 6.64 km away from Ram. He hears the sound 20 seconds later. Then the speed of sound is

A) 664 m/s B)  664 km/s
C) 332 m/s D) 332 km/s
 
Answer & Explanation Answer: C) 332 m/s

Explanation:
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Filed Under: Time and Distance
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Q:

1/4 of 12?

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

Explanation:

1/4 of 12

= 1/4 x 12

= 3

 

Hence, 1/4 of 12 = 3.

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Filed Under: Percentage
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