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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

 

 

A) 67   B) 68  
C) 56   D) 74
 
Answer & Explanation Answer: A) 67  

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Q:

PQR is an equilateral triangle. MN is drawn parallel to QR such that M is on PQ and N is on PR. If PN = 6 cm, then the length of MN is

A) 3 cm B) 6 cm
C) 12 cm D) 4.5 cm
 
Answer & Explanation Answer: B) 6 cm

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Q:

What is the equation of the line perpendicular to the line 2x + 3y= -6 and having Y-intercept 3?

A) 3x - 2y = 6 B) 3x - 2y = -6
C) 2x - 3y = -6 D) 2x - 3y = 6
 
Answer & Explanation Answer: B) 3x - 2y = -6

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Q:

In which of the following quadrilaterals opposite angles are supplementary?

A) Rhombus B) Parallelogram
C) Trapezium D) Cyclic quadrilateral
 
Answer & Explanation Answer: D) Cyclic quadrilateral

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Q:

What is the value of ( 1/√3 + cot60) ?

A) 3√3/2 B) 7/2√3
C) (4+√3)/2√3 D) 2/√3
 
Answer & Explanation Answer: D) 2/√3

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Q:

What is the value of (tan60 + 1/3) ?

A) (2√2+1)/2 B) (√3+1)/√3
C) (3√3+1)/3 D) (3+√2)/3√2
 
Answer & Explanation Answer: C) (3√3+1)/3

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Q:

Which of the following is correct?

A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2 B) (4x + 5y)(5x - 4y) = 20x2 + 41xy - 20y2
C) (4x + 5y)(5x - 4y) = 20x2 - 9xy + 20y2 D) (4x + 5y)(5x - 4y) = 20x2 - 41xy + 20y2
 
Answer & Explanation Answer: A) (4x + 5y)(5x - 4y) = 20x2 + 9xy - 20y2

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Q:

What is the value of 26 + 152?

A) 17 B) 19
C) 15 D) 21
 
Answer & Explanation Answer: A) 17

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