Quantitative Aptitude - Arithmetic Ability Questions

The difference between Peter and Preeti's ages is 5 years. When they married each other 35 years ago, 4 times Peter's age was the same as 5 times the age of Preeti. What is the current sum of their ages?

The average salary of all workers in a workshop is Rs.12000. The average salary of 7 technicians is Rs.15000 and the average salary of the rest is Rs.9000. The total number of workers in the workshop is

The ratio between Ram's age and Rahim's age is 10:11. What is the age of Rahim in percentage of Ram's age

Which of the following numbers is not a prime number?

If a2+1=9a, (a≠0) then the value of a2+1a2 is

The standard deviation of the set {10, 11, 12, 9, 8} is

In the following question, select the odd letters from the given alternatives.

Find out the odd word/letters/number/number pair from the given alternatives.