UPSC - CSAT Aptitude Mock Tests

Looking at a portrait of a man, a woman said, "His mother is the only daughter of my father." How is the woman related to the man?

A sum of money amounts to Rs. 13,310 in 3 years at compound interest compounded annually. If the rate of interest is 10% per annum, what is the principal sum?

A sum of money doubles itself at compound interest in 6 years. In how many years will it become eight times?

In how many ways can a committee of 5 members be formed from 6 men and 5 women such that there are at least 3 men?

The price of a TV set was Rs. 17000. If the price was decreased by 5%, what is the new price?

A bag contains 4 red and 6 blue balls. Another bag contains 3 red and 5 blue balls. One ball is drawn from each bag. What is the probability that both balls are of the same color?

A can do a work in 10 days and B can do the same work in 15 days. How long will they take to complete the work together?

The ratio of the ages of two siblings is 7:5. Five years from now, the ratio will be 4:3. What is the present age of the elder sibling?