6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

If a boat goes upstream at a speed of 18 km/hr and comes back the same distance at 30 km/hr. What is the average speed (in km/hr) for the total journey?

A) 22.5	B) 24
C) 20.5	D) 25

Answer & Explanation Answer: A) 22.5

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Boats and Streams
Exam Prep: Bank Exams

12 2775

Q:

The value of $1 + 2^{2} + 2^{3} + 2^{4} + . . . + 2^{9}$ is

A) 255	B) 511
C) 1021	D) 2047

Answer & Explanation Answer: C) 1021

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Numbers
Exam Prep: Bank Exams , CAT

9 2775

Q:

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1 = ?

A) 0	B) 2
C) 12	D) 10

Answer & Explanation Answer: C) 12

Explanation:

Given

1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1

Using BODMAS Rule,

As multiplication precedes addition, 1 x 0 = 0,

Now, 10 + 0 + 1 + 1 = 10 + 2 = 12.

Hence, 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 x 0 + 1 + 1 = 12.

Report Error

View Answer Report Error Discuss

Filed Under: Problems on Numbers
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

6 2770

Q:

How many numbers of five digits can be formed by using the digits 1, 0, 2, 3, 5, 6 which are between 50000 and 60000 without repeating the digits?

A) 120	B) 240
C) 256	D) 360

Answer & Explanation Answer: A) 120

Explanation:

Required number of 5 digit numbers can be formed by using the digits 1, 0, 2, 3, 5, 6 which are between 50000 and 60000 without repeating the digits are

5 x 4 x 3 x 2 x 1 = 120.

Report Error

View Answer Report Error Discuss

Filed Under: Permutations and Combinations
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

8 2770

Q:

Divide Rs. 210 in the ratio 2:3:4:5. Th respective amounts are:

A) 30,45,65&70	B) 30,45,60&75
C) 35,40,60&75	D) 30,40,60&80

Answer & Explanation Answer: B) 30,45,60&75

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

5 2769

Q:

If (x/a) + (y/b) = 3 and (x/b) – (y/a) = 9, then what is the value of x/y?

A) ( b + 3 a)/( a – 3 b)	B) ( a + 3 b)/( b – 3 a)
C) (1 + 3 a)/( a + 3 b)	D) ( a + 3 b2)/( b – 3 a2)

Answer & Explanation Answer: A) ( b + 3 a)/( a – 3 b)

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

5 2764

Q:

If A = 2B = 4C; what is the value of A : B : C?

A) 4 : 2 : 1	B) 1 : 2 : 4
C) 8 : 4 : 1	D) 16 : 4 : 1

Answer & Explanation Answer: A) 4 : 2 : 1

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

1 2759

Q:

What is the HCF of 6345 and 2160?

A) 45	B) 135
C) 270	D) 15

Quantitative Aptitude - Arithmetic Ability Questions

Quick Links