Quantitative Aptitude - Arithmetic Ability Questions

Q:

In a company 2/3 of the workers are girls, 1/2 of the girls are married and 1/3 of the married girls live in hostel. If 3/4 of the boys are married and 2/3 of married boys live in hostel. Calculate the part of workers who don’t live in hostel.

 

A) 11/18 B) 15/18  
C) 17/18   D) 13/18
 
Answer & Explanation Answer: D) 13/18

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Q:

An octahedron has 6 vertices. How many edges does it have?

A) 8 B) 12
C) 6 D) 10
 
Answer & Explanation Answer: B) 12

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Q:

If  C+1C = 3, then what is the value of C3+1C3 = ?

A) 0 B) 3√3
C) 1/√3 D) 6√3
 
Answer & Explanation Answer: A) 0

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Q:

What is the equation of a line having a slope -1/3 and y-intercept equal to 6?

A) x + 3y = 18 B) x - 3y = 6
C) x + 3y = -18 D) x - 3y = -6
 
Answer & Explanation Answer: A) x + 3y = 18

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Q:

If the sum of the measures of all the interior angles of polygon is 2340°. What is the number of sides of the polygon?

A) 13 B) 15
C) 17 D) 11
 
Answer & Explanation Answer: B) 15

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Q:

In ΔXYZ measure of angle Y is 90 deg. If cot X = 5/12, and XY = 2.5 cm, then what is the length (in cm) of side XZ?

A) 6 B) 4
C) 5.6 D) 6.5
 
Answer & Explanation Answer: D) 6.5

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Q:

The reciprocal of the sum of the reciprocals of 8/7 and 5/6 is:

A) 83/40 B) 42/83
C) 83/42 D) 40/83
 
Answer & Explanation Answer: D) 40/83

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Q:

9 hrs after a goods train passed a station, another train travelling at a speed of 72 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 3 hours. What is the speed of the goods train?

A) 21.6 km/hr B) 27 km/hr
C) 18 km/hr D) 14.4 km/hr
 
Answer & Explanation Answer: C) 18 km/hr

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