Quantitative Aptitude - Arithmetic Ability Questions

Q:

The sum of 2xy(3x + 4y - 5z) and 5yz(2x - 3y) is

A) 6x2y - 8xy2 + 15y2z B) 6x2y + 8xy2 - 15y2z
C) 6x2y + 8xy2 - 15y2z - 20xyz D) 6x2y - 8xy2 + 15y2z + 20xyz
 
Answer & Explanation Answer: B) 6x2y + 8xy2 - 15y2z

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Filed Under: Simplification
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Q:

Akash's monthly income is Rs. 9600. His monthly expenditure is 60% of his income. What is his saving per month?

A) Rs. 3840 B) Rs. 3870
C) Rs. 3940 D) Rs. 3850
 
Answer & Explanation Answer: A) Rs. 3840

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Filed Under: Percentage
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Q:

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

A) 10% B) 20%
C) 40% D) 60%
 
Answer & Explanation Answer: B) 20%

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Filed Under: Probability
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Q:

Select the odd number from the given alternatives.

A) 43 B) 22
C) 13 D) 41
 
Answer & Explanation Answer: B) 22

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Filed Under: Odd Man Out
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Q:

If sum of the roots of a quadratic equation is ­-7 and product of the roots is 12. Find the quadratic equation.

A) x2 + 7x + 12 = 0 B) x2 -­ 7x + 12 = 0
C) x2 -­ 7x -­ 12 = 0 D) x2 + 7x -­ 12 = 0
 
Answer & Explanation Answer: A) x2 + 7x + 12 = 0

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Q:

If the shopkeeper sells an item at Rs 1600 which is marked as Rs 2000, then what is the discount he is offering?

A) 25 percent B) 20 percent
C) 30 percent D) 10 percent
 
Answer & Explanation Answer: B) 20 percent

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Filed Under: Percentage
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Q:

The bar chart given shows the sales of 3 types of cars in the Indian automotive industry over 4 years. All the sales figures have been shown in terms of 000 units.

What is the respective ratio of total sales of Sedan and total sales of SUV over the period of 4 years?

A) 23 : 31 B) 29 : 39
C) 43 : 31 D) 76 : 47
 
Answer & Explanation Answer: C) 43 : 31

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Q:

If PQ and PR be the two tangents to a circle with centre O such that ∠QPR = 120° then ∠POQ is

A) 90° B) 45°
C) 30° D) 60°
 
Answer & Explanation Answer: C) 30°

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Filed Under: Volume and Surface Area
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