Aptitude and Reasoning 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:

Select the odd word/letters/number/number pair from the given alternatives.

A) 243 B) 264
C) 333 D) 405
 
Answer & Explanation Answer: B) 264

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Q:

What is the value of cos (90 – B) sin (C – A) + sin (90 + A) cos (B + C) – sin (90 – C) cos (A + B)?

A) 1 B) sin ( A + B – C)
C) cos ( B + C – A) D) 0
 
Answer & Explanation Answer: D) 0

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Q:

If x + 3y - 2z4 = 6, x + 232y + 3z = 33 and 17x + y +z + 2z =9,  then what is the value of 46x+ 131y ?

A) 414 B) 364
C) 384 D) 464
 
Answer & Explanation Answer: A) 414

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Q:

What is the value of Sin 30° - Cosec 45°?

A) (2√6 - 1)/√3 B) (1 - 2√3)/2
C) (√2 - √3)/√6 D) (1 - 2√2)/2
 
Answer & Explanation Answer: D) (1 - 2√2)/2

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Q:

The distance between the points (4, 8) and (k,-4) is 13. What is the value of k?

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

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Filed Under: Time and Distance
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Q:

What is the equation of the line whose y­-intercept is ­3/4 and making an angle of 45° with the positive x-­axis?

A) 4x -­ 4y = 3 B) 4x - 4y = -­3
C) 3x -­ 3y = 4 D) 3x ­- 3y = -­4
 
Answer & Explanation Answer: A) 4x -­ 4y = 3

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Q:

If a+1b=1 and b+1c=1 , then the value of c+1a is

A) 0 B) 1
C) -1 D) 2
 
Answer & Explanation Answer: B) 1

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