Quantitative Aptitude - Arithmetic Ability Questions

Q:

ΔDEF is right angled at E. If m∠F = 30 deg, then find the value of (sinD - 1/3).

A) -1/2√3   B) (3√3-2)/6  
C) (√2-√3)/√6   D) (2√2-1)/√2
 
Answer & Explanation Answer: B) (3√3-2)/6  

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Q:

Calculate the sum of squares from 1 to 9.

A) 284 B) 285
C) 385 D) 380
 
Answer & Explanation Answer: B) 285

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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:

If the curved surface area of a right circular cone is 10010 sq cm and its slant height is 91 cm, find its total surface area.

A) 27720 sq cm B) 4620 sq cm
C) 6930 sq cm D) 13860 sq cm
 
Answer & Explanation Answer: D) 13860 sq cm

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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:

The point equidistant from the sides of a triangle is called

A) Circumcenter B) Incentre
C) Orthocentre D) Centroid
 
Answer & Explanation Answer: B) Incentre

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Q:

The square of 11111 is

A) 1234321 B) 1223311
C) 123454321 D) 321231
 
Answer & Explanation Answer: C) 123454321

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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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