6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

Find x.

693.5 - (47.23 - x) - 82.48 = 8.172.

A) -720.578	B) -555.618
C) -650.078	D) 831.382

Answer & Explanation Answer: B) -555.618

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

5 88829

Q:

In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 60 questions and secures 130 marks, the no of questions he attempts correctly is :

A) 35	B) 38
C) 40	D) 42

Answer & Explanation Answer: B) 38

Explanation:

Let the number of correct answers be X.

Number of incorrect answers = (60 – X).

4x – (60 – x) = 130

=> 5x = 190

=> x = 38

Report Error

View Answer Report Error Discuss

Filed Under: Simplification

266 88800

Q:

The length of a diagonal in cms of a rectangle of length 5 cm and width 3 cm is

A) √34	B) +-√34
C) 4	D) +-4

Answer & Explanation Answer: A) √34

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Area
Exam Prep: Bank Exams

2 88751

Q:

Which of the following statement(s) is/are TRUE?

I. 3/71 < 5/91 < 7/99
II. 11/135 > 12/157 > 13/181

A) Only I	B) Only II
C) Both I and II	D) Neither I nor II

Answer & Explanation Answer: C) Both I and II

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

5 88667

Q:

Direction: What should come in the place of question mark (?) in the following number series?

7, 10, 16, 28, ?, 100

A) 34	B) 40
C) 52	D) 60

Answer & Explanation Answer: C) 52

Explanation:

The pattern followed is +3 , +6 , +12 , +24 , +48

Report Error

View Answer Report Error Discuss

Filed Under: Numbers
Exam Prep: AIEEE , Bank Exams , GATE

0 87774

Q:

If each edge of a cube is increased by 50%, find the percentage increase in Its surface area

A) 125%	B) 150%
C) 175%	D) 110%

Answer & Explanation Answer: A) 125%

Explanation:

Let the edge = a cm

So increase by 50 % = a + a/2 = 3a/2

Total surface Area of original cube = $6 a^{2}$

TSA of new cube = $6 {(\frac{3 a}{2})}^{2}$ = $6 (\frac{9 a^{2}}{4})$ = $13.5 a^{2}$

Increase in area = $13.5 a^{2} - 6 a^{2}$ = $7.5 a^{2}$

$7.5 a^{2}$ Increase % = $\frac{7.5 a^{2}}{6 a^{2}} \times 100$ = 125%

Report Error

View Answer Report Error Discuss

Filed Under: Volume and Surface Area

484 87565

Q:

Find the wrong number in the given number series?

180, 90, 60, 40, 36

A) 36	B) 40
C) 60	D) 90

Answer & Explanation Answer: B) 40

Explanation:

The given number series is 180, 90, 60, 40, 36

It follows a pattern that,

180 x 1/2 = 90

90 x 2/3 = 60

60 x 3/4 = 45 (NOT 40)

45 x 4/5 = 36

Hence, the wrong number in the given series is 40.

Report Error

View Answer Report Error Discuss

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

2 87365

Q:

Compute of 1848 / 231 - 10 = ?

A) 2	B) -2
C) 188/221	D) 1884/221

Quantitative Aptitude - Arithmetic Ability Questions

Quick Links