6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Cost of 4 pens, 6 note books and 9 files is Rs 305. Cost of 3 pens, 4 notebooks and 2 files is Rs 145. What is the cost (in Rs) of 5 pens, 8 notebooks and 16 files?

A) 415	B) 465
C) 440	D) Cannot be determined

Answer & Explanation Answer: B) 465

Explanation:

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Filed Under: Simplification
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Q:

Δ LMN is right angled at M. If m∠N = 60°, then Tan L =______.

A) 1/2	B) 1/√3
C) 1/√2	D) 2

Answer & Explanation Answer: B) 1/√3

Explanation:

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Q:

If $x + 3 y - \frac{2 z}{4} = 6, x + \frac{2}{3} (2 y + 3 z) = 33 and \frac{1}{7} (x + y + z) + 2 z = 9,$ 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:

$\sqrt (1 + \tan^{2} A) / tanA$ is equal to

A) secA	B) sinA
C) cosecA	D) cosA

Answer & Explanation Answer: C) cosecA

Explanation:

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Q:

Simplify $(b^{2} x 3 a^{2} z^{4}) \times (b^{2} x 4 a^{4} z 3) / (a^{3} b^{2} z 4)$

A) b2x7a3z3	B) b3x7a3 z3
C) b2x5a3 z3	D) b2x7a3z2

Answer & Explanation Answer: A) b2x7a3z3

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Q:

A certain sum when invested at 5% interest compounded annually for 3 years yields an interest of Rs.2522. Find the Principal?

A) Rs. 12,522	B) Rs. 15,200
C) Rs. 16,000	D) Rs. 17,200

Answer & Explanation Answer: C) Rs. 16,000

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Filed Under: Compound Interest
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Q:

Given that the polynomial $(x^{2} + ax + b)$ leaves that same remainder when by (x –1) or (x + 1) What are the values of a and b respectively?

A) 4 and 0	B) 0 and 3
C) 3 and 0	D) 0 and any interger

Answer & Explanation Answer: D) 0 and any interger

Explanation:

Since x^2+ ax + b when divided by x-1 or x+1 leaves the same remainder

So on putting x=1 and x=-1 we get the same value

1+a+b = 1-a+b

2a=0

a=0

here b can take any value as it will always get cancelled out

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Q:

The co-ordinates of the centroid of a triangle ABC are (1 , -4). What are the co-ordinates of vertex C if co-ordinates of A and B are (3 , -4) and (0 , 5) respectively?

A) (0 , 13)	B) (0, 5)
C) (0, -5)	D) (0 , -13)

Quantitative Aptitude - Arithmetic Ability Questions

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