Quantitative Aptitude - Arithmetic Ability Questions

If the amount received at 10% per annum Compound interest after 3 yrs is Rs 19965, then what will have been the principal (in Rs) amount?

What is the sum of the first 11 terms of an arithmetic progression if the first term is -31 and last term is 29?

If the difference of the compound interest and the simple interest on a sum of money for 3 years is Rs. 186. Find the sum of money, if the rate of interest in both case be 10%

ΔABC is right angled at B. If m∠C = 60°, then find the value of (cotA - 1/2).

A batsman makes a score of 111 runs in the 10th match and thus increases his average runs per match by 5. What will be his average after the 10th match?

The 4th term of an arithmetic progression is 15, 15th term is -29, find the 10th term?

Find 2 consecutive natural numbers, sum of whose squares is 25.

The product of two numbers is 40. One of them is 2.50. What is the other number?