Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the unit digit of 15+25+35+...+205 ?

A) 0 B) 5
C) 2 D) 4
 
Answer & Explanation Answer: A) 0

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Q:

The sum of 6xy(2x - 4z) , 3yz(2x - 3z) and 4xz(3y - 2y2) is

A) 12x2y - 6xyz - 9yz2 + 8xy2z B) 12x2y - 6xyz + 9yz2 - 8xy2z
C) 12x2y - 6xyz - 9yz2 - 8xy2z D) 12x2y + 6xyz - 9yz2 - 8xy2z
 
Answer & Explanation Answer: C) 12x2y - 6xyz - 9yz2 - 8xy2z

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Q:

If x + 1/x = √13, then 3x(x2-1) equal to

A) 3√13 B) √13/3
C) 1 D) 3
 
Answer & Explanation Answer: C) 1

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Q:

The ratio of number of boys and girls in a school of 720 students is 7 : 5 . How many more girls should be admitted to make the ratio 1 : 1 ?

A) 90 B) 120
C) 220 D) 240
 
Answer & Explanation Answer: B) 120

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Q:

If 2cosec2A = x, then the value of x is

A) 1/(1 - cosecA) - 1/(1 + cosecA) B) 1/(1 + sinA) + 1/(1 - tanA)
C) 1/(1 + cosA) + 1/(1 - cosA) D) 1/(1 - tanA) - 1/(1 + sinA)
 
Answer & Explanation Answer: C) 1/(1 + cosA) + 1/(1 - cosA)

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Q:

A train crosses a 375 m long platform in 27 seconds. How long was the train if it was travelling at the speed of 70 kmph?

A) 525 m B) 140 m
C) 160 m D) 150 m
 
Answer & Explanation Answer: D) 150 m

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Q:

A train starts from a place A at 8:00 a.m. and arrives at another place B at 1:30 p.m. on the same day. If the speed of the train is 30 km/hr, then what will be the distance (in km) covered by the train?

 

A) 165 B) 175
C) 150 D) 135
 
Answer & Explanation Answer: A) 165

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Q:

Profit of Rs 1,03,500 has to be divided between three partners A, B and C in the ratio 11:7:5. How much amount (in Rs) does B get?

A) 22,500 B) 49,500
C) 50,500 D) 31,500
 
Answer & Explanation Answer: D) 31,500

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