Quantitative Aptitude - Arithmetic Ability Questions

The successive discount of 15%, 20% and 25% on an article is equivalent to the single discount of

Find the mean of the first 6 prime numbers?

Four numbers A, B, C and D are such that their overall average is 16. The average of A and B is 9.5. The average of C and D is

What is the sum of the first 11 terms of an arithmetic progression if the 4th term is 11 and the 7th term is -4?

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 32448 and Rs 33745.92 respectively, what is the rate of interest?

A sum of Rs 20000 becomes Rs 32000 in 12 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 2 years?

What is the value of 13 x 4932?

What is the value of 2 consecutive natural numbers, sum of whose squares is 145?