Quantitative Aptitude - Arithmetic Ability Questions

Q:

If 11-13xx + 11-13yy + 11-13zz = 5 then what is the value of 1x + 1y + 1z = ?

A) 1 B) 13/11
C) 13/5 D) 4
 
Answer & Explanation Answer: D) 4

Explanation:
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Q:

The curved surface area and the slant height of a right circular cone are 99 sq.cm and 9 cm respectively. Find its diameter (in cm)

A) 3.5 B) 7
C) 14 D) 10.5
 
Answer & Explanation Answer: B) 7

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Q:

An angle is smaller than its supplementary angle by 50°. What is the measure of the angle?

A) 115° B) 60°
C) 30° D) 65°
 
Answer & Explanation Answer: D) 65°

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Q:

Coefficient of x2 in (x + 9)(6 -­ 4x) is

A) 54 B) -4
C) ­30 D) 4
 
Answer & Explanation Answer: B) -4

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Q:

In the following question, select the odd word pair from the given alternatives

A) White – Colour B) Blue – Colour
C) Yellow – Orange D) Black – Colour
 
Answer & Explanation Answer: C) Yellow – Orange

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Q:

If x = 2+32-3, then what is the value of x2+x-9 ?

A) 0 B) 3√2
C) 3√3 D) 5√3
 
Answer & Explanation Answer: D) 5√3

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Q:

If 3 tan θ = cot θ where 0 < θ < π/2, then what is the value of θ ?

A) π/6 B) π/4
C) π/2 D) 1
 
Answer & Explanation Answer: A) π/6

Explanation:
3tan θ = cot θ 
3tan θ = 1/tan θ
tan2θ = 1/3
tan θ = 1/√3
θ = π/6
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Q:

For which value of ‘g’ the linear graph of 6x + 12y +9 = 0 and 2x + gy + 3 =0 has infinite number of solutions?

A) 3 B) 4
C) 6 D) 9
 
Answer & Explanation Answer: B) 4

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