Quantitative Aptitude - Arithmetic Ability Questions

Q:

2sin[(C+D)/2].cos[(C­-D)/2] is equal to

A) sinC ­-  sinD B) cosC + cosD
C) cosC -­ cosD D) sinC + sinD
 
Answer & Explanation Answer: D) sinC + sinD

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Q:

Amarjeet scored 92, 98 and 90 marks in Chemistry, Mathematics and Physics respectively. The maximum marks in each subject are 100. Determine his overall percentage for the three subjects.

A) 0.9234 B) 0.5956
C) 0.9333 D) 0.8444
 
Answer & Explanation Answer: A) 0.9234

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Q:

Find the odd numbers/letters/numbers from the given alternatives.

A) 1, 0.75, 0.5, 1.25 B) 4, 3, 2, 5
C) 1, 4, 2, 8 D) 2, 1.5, 1, 2.5
 
Answer & Explanation Answer: C) 1, 4, 2, 8

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Q:

Select the odd number from the given alternatives.

A) 1 B) -2
C) -(-3) D) 5
 
Answer & Explanation Answer: B) -2

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Q:

Reflection of the point (3,-6) in the y-axis is

A) (3,6) B) (3,-6)
C) (-3,-6) D) (-3,6)
 
Answer & Explanation Answer: C) (-3,-6)

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Q:

What is the equation of the line which passes through the points (3,­2) and (5,3)?

A) 5x ­- 2y = ­-19 B) 5x ­- 2y = 19
C) 5x + 2y = ­31 D)  5x + 2y = -31
 
Answer & Explanation Answer: B) 5x ­- 2y = 19

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Q:

A, B and C can work together for Rs. 550/- A and B together are to do 7/11 of the work. The share of C should be?

A) Rs. 200 B) Rs. 300
C) Rs. 400 D) Rs. 450
 
Answer & Explanation Answer: A) Rs. 200

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Q:

The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find the mean of marks of the students of three divisions of Class X.

A) 52.1 B) 51.4
C) 52.8 D) 54.2
 
Answer & Explanation Answer: C) 52.8

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