Quantitative Aptitude - Arithmetic Ability Questions

Q:

There is a three digit number. The digit at the tenth place is 3. If the place of all the digits are replaced with each other symmetrically about the tens position,then the new number obtained is 396 more than the original three digit number. The sum of the digits at unit & hundredth place is 14. Find out the original number?

A) 513 B) 539
C) 439 D) 613
 
Answer & Explanation Answer: B) 539

Explanation:

Ans.
Let digit = xyz
Given y = 3
According to the question = (100z+10y+x) - (100x+10y+z) = 396x99z-99x = 396
Z-x = 4
Also, Z+ x = 14
Solving (i) & (ii)
Z = 9 , x= 5
The original number is 539

Report Error

View Answer Report Error Discuss

Filed Under: Numbers

0 2058
Q:

If xy (x + y) = m, then the value of x3 + y3 + 3m is:

A) m3xy B) m3x+y3
C) m3x3y3 D) mx3y3
 
Answer & Explanation Answer: D) mx3y3

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

0 2058
Q:

Select the related number from the given alternatives.
0.02 : 0.002 :: 1/3 : ?

A) 0.333 B) 1/30
C) 0.003 D) 3
 
Answer & Explanation Answer: B) 1/30

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

3 2057
Q:

When a number is increased by 120, it becomes 130% of itself. What is the number?

A) 400 B) 520
C) 460 D) 580
 
Answer & Explanation Answer: A) 400

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Percentage
Exam Prep: Bank Exams

0 2057
Q:

Ravi had five subjects in his final examination. The maximum marks in each subject are 100. If his percentage in four subjects is 80, and he scores 65 marks in the fifth subject, determine his overall percentage for the five subjects.

A) 0.78 B) 0.79
C) 0.77 D) 0.76
 
Answer & Explanation Answer: C) 0.77

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Percentage
Exam Prep: Bank Exams

0 2057
Q:

Type 1 workers can do three times the work of Type 2 workers. Twelve Type 1 workers can complete a task in 10 days. How many days would it have taken 4 Type 1 and 8 Type 2 workers to complete the same task?

A) 16 B) 17
C) 20 D) 18
 
Answer & Explanation Answer: D) 18

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams , CAT

0 2057
Q:

The difference between simple interest on a certain sum at the rate of 6% per annum for 5 years and 6 years is 25.8. What is the sum (in Rs)?

 

A) 480 B)  430
C) 258 D) 516
 
Answer & Explanation Answer: B)  430

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Simple Interest
Exam Prep: Bank Exams

3 2056
Q:

If (x+1/x) = 5, then the value of 5xx2+5x+1?

A) 1/3 B) 1/4
C) 1/2 D) 1/5
 
Answer & Explanation Answer: C) 1/2

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Simplification
Exam Prep: Bank Exams

0 2056