6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Find the missing number in the given number series?

5 11 21 44 ? 175

A) 86	B) 78
C) 94	D) 102

Answer & Explanation Answer: A) 86

Explanation:

Here the given number series is 5 11 21 44 ? 175

Now the given series follows a pattern, that

x2 + 1, x2 - 1, x2 + 2, x2 - 2, x2 + 3, x2 - 3,...

Then the missing number is x2 - 2

= 44 x 2 - 2 = 88 - 2 = 86

Hence, the missing number in the number series is 86.

Report Error

View Answer Report Error Discuss

Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Database Administration , Bank PO , Bank Clerk , Analyst

2 60704

Q:

If $(x + \frac{1}{x}) = 2,$ then find the value of $(x^{3} + \frac{1}{x^{3}}) \div (x^{18} + \frac{1}{x^{18}})$

A) 2/9	B) 5
C) 1	D) 1/9

Answer & Explanation Answer: C) 1

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

0 60577

Q:

Solve the following.

-4 - (-7 - 12 / 4) = ?

A) -2	B) 6
C) 0.75	D) -14

Answer & Explanation Answer: B) 6

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

0 60519

Q:

Find out the wrong number in the following series:

5, 15, 30, 80, 180, 540, 1080

A) 540	B) 180
C) 30	D) 80

Answer & Explanation Answer: D) 80

Explanation:

There should be 90 instead of 80
so we can have a series
5, 5x3, 15x2, 30x3, 90x2, 180x3, 540x2 and 1080x3 and so on...

Report Error

View Answer Report Error Discuss

Filed Under: Odd Man Out
Exam Prep: Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

6 60232

Q:

What is the value of (sin45 - √3) ?

A) (1-√6)/√2	B) (4-√3)/2√3
C) -1/2√3	D) (2-√3)/2√3

Answer & Explanation Answer: A) (1-√6)/√2

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

0 60211

Q:

Find the volume (in cm³) of a cube of side 4.5 cm.

A) 55.467	B) 14.445
C) 91.125	D) 26.465

Answer & Explanation Answer: C) 91.125

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

2 60197

Q:

A milkman purchases the milk at Rs. x per litre and sells it at Rs. 2x per litre still he mixes 2 litres water with every 6 litres of pure milk. What is the profit percentage?

A) 116%	B) 166.66%
C) 60%	D) 100%

Answer & Explanation Answer: B) 166.66%

Explanation:

Let the cost price of 1-liter pure milk be Re.1, then

$\{\begin{cases} 6 l i t e r s (m i l k) \to C . P = R s . 6 \\ 2 l i t e r s (w a t e r) \to C . P = R s . 0 \end{cases} \to C P = R s . 6 o n l y$

8 litre mixture =>

SP => 8 x 2 = Rs. 16

Profit % = $\frac{16 - 6}{6} x 100 = \frac{1000}{6} = 166.66 %$

Report Error

View Answer Report Error Discuss

Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

394 60085

Q:

Select the option that can replace the question mark (?) in the following equation.

$\frac{{(0.2)}^{3} - {(0.1)}^{3}}{{(0.2 + 0.1)}^{2}}$

A) 1/18	B) 3/40
C) -7/90	D) 7/90

Quantitative Aptitude - Arithmetic Ability Questions

Quick Links