6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

What is the value of [(√529) + (√5.29) + (√0.0529)]?

A) 25.323	B) 25.53
C) 23.253	D) 23.53

Answer & Explanation Answer: B) 25.53

Explanation:

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0 29588

Q:

A boat takes 19 hours for travelling downstream from point A to point B and coming back to a point C which is at midway between A and B. If the velocity of the stream is 4 kmph and the speed of the boat in still water is 14 kmph, what is the distance between A and B ?

A) 180 km	B) 160 km
C) 140 km	D) 120 km

Answer & Explanation Answer: A) 180 km

Explanation:

Speed in downstream = (14 + 4) km/hr = 18 km/hr;

Speed in upstream = (14 – 4) km/hr = 10 km/hr.

Let the distance between A and B be x km. Then,

x/18 + (x/2)/10 = 19 ⇔ x/18 + x/20 = 19 ⇒ x = 180 km.

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Filed Under: Boats and Streams
Exam Prep: AIEEE , Bank Exams , CAT
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90 29574

Q:

Pick an odd man in the given number series?

4 12 38 87 198

A) 12	B) 38
C) 87	D) 198

Answer & Explanation Answer: A) 12

Explanation:

The given series follows a pattern that,

$4 + 3^{2} = 4 + 9 = 13 13 + 5^{2} = 13 + 25 = 38 38 + 7^{2} = 38 + 49 = 87 87 + 9^{2} = 87 + 81 = 198$

Hence, the odd man in the given number series is 12.

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Filed Under: Odd Man Out
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4 29561

Q:

If $\sec θ + \tan θ = 2, then \sec θ - \tan θ = ?$

A) 0.5	B) 1.5
C) 1	D) 0.75

Answer & Explanation Answer: A) 0.5

Explanation:

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Q:

Solve the following

$78 \div [- 4 + (- 3) of \{27 \div (- 18 \div - 2)\}]$

A) -6	B) 13
C) 6	D) 15.6

Answer & Explanation Answer: A) -6

Explanation:

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Q:

Find the value of ${[7 {(64^{\frac{1}{3}} + 27^{\frac{1}{3}})}^{3}]}^{\frac{1}{4}}$

A) 7	B) 6
C) 49	D) 343

Answer & Explanation Answer: A) 7

Explanation:

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2 29535

Q:

What is the value of 'x' in $2 \sqrt{3 x} - 5 \sqrt{27 x} + \sqrt{108 x} = - 21 ?$

A) 0.33	B) 1
C) 3	D) 9

Answer & Explanation Answer: C) 3

Explanation:

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Q:

Find the dividend if the divisor is (x+2), quotient is (4x-5) and the remainder is 12.

A) 4x2+5x+2	B) 4x2+3x+2
C) 4x2-3x+2	D) 4x2+3x-2

Quantitative Aptitude - Arithmetic Ability Questions

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