Quantitative Aptitude - Arithmetic Ability Questions

Q:

From the top of a platform 7 m high, the angle of elevation of a tower was 30 deg. If the platform was positioned 50√3 m away from the tower, how tall was the tower?

A) 57 m B) 50 m
C) (25√3 + 7) m D) 25√3 m
 
Answer & Explanation Answer: D) 25√3 m

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Filed Under: Height and Distance
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Q:

The pair of linear equations 3x + y = 1 and px + 2y = 5 has no finite solution if

A) p>=6 B) p = 6
C) 0 < p < 6 D) p = 0
 
Answer & Explanation Answer: B) p = 6

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Q:

Find the value of  y(y4 - y2 - y) when y = 5.

A) 2900 B) 2975
C) 2925 D) 2995
 
Answer & Explanation Answer: B) 2975

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Q:

In ΔDEF, G and H are points on side DE and DF respectively. GH is parallel to EF. If G divides DE in the ratio 3:2 and HF is 8 cm, then the length of DF is

A) 12 cm B) 20 cm
C) 14 cm D) 16 cm
 
Answer & Explanation Answer: B) 20 cm

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Filed Under: Volume and Surface Area
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Q:

The point of the intersection of three medians is known as the ____________.

A) circum-centre B) in-center
C) centroid D) orthocenter
 
Answer & Explanation Answer: C) centroid

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Filed Under: Volume and Surface Area
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Q:

Which instrument is used for viewing the sun?

A) Stroboscope B) Telescope
C) Helioscope D) Sun meter
 
Answer & Explanation Answer: C) Helioscope

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Filed Under: Problems on Numbers
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Q:

ΔDEF is right angled at E. If cosecD = 5/4, then what is the value of cosecF?

A) 5/3 B) 3/4
C) 4/5 D) 4/3
 
Answer & Explanation Answer: A) 5/3

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Q:

The square root of 6084 is

A) 82 B) 78
C) 74 D) 76
 
Answer & Explanation Answer: B) 78

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