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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

If 4x + 5y = 14 and x - 5y = 16 then the value of x and y are

A) 10 and -6/5 B) 6 and 2
C) 10 and 6/5 D) 6 and -2
 
Answer & Explanation Answer: D) 6 and -2

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Q:

What is the equation of the line which intercepts x­axis and y­axis at 3/4 and ­2/3 respectively?

A) 8x + 9y = 6 B) 9x + 8y = 12
C) 8x ­- 9y = 6 D) 9x + 8y = ­-12
 
Answer & Explanation Answer: C) 8x ­- 9y = 6

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Q:

Find the sum of interior angles of a dodecagon?

A) 1620° B) 1800°
C) 1440° D) 1260°
 
Answer & Explanation Answer: B) 1800°

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Q:

Which of the following quadratic equations has real roots?

A) 4x2 - 3x + 6 = 0 B) 2x2 + 7x + 6 = 0
C) x2 - 2x + 4 = 0 D) 3x2 - 4x + 3 = 0
 
Answer & Explanation Answer: B) 2x2 + 7x + 6 = 0

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Q:

The sum of two numbers is equal to thrice their difference. If the smaller of the numbers is 10 find the other number.

A) 15 B) 30
C) 40 D) None of these
 
Answer & Explanation Answer: D) None of these

Explanation:

Let larger number be x and smaller number be y.

Also, y = 10

According to question,

⇒(x + y) = 3((x –y)⇒(x + 10) = 3(x –10)

⇒2x = 40⇒x = 20

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Filed Under: Numbers
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Q:

38% of 250 is equal to

A) 95 B) 114
C) 76 D) 104.5
 
Answer & Explanation Answer: A) 95

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Filed Under: Percentage
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Q:

In triangle ABC, ∠ABC = 90°. BP is drawn perpendicular to AC. If ∠BAP = 50°, then what is the value (in degrees) of ∠PBC?

A) 30 B) 45
C) 50 D) 60
 
Answer & Explanation Answer: C) 50

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Q:

The effective annual rate of interest corresponding to a nominal rate of 19% per annum payable half­yearly is:

A) 38 percent B) 19.9 percent
C) 39.81 percent D) 19 percent
 
Answer & Explanation Answer: B) 19.9 percent

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Filed Under: Simple Interest
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