Quiz 18

Four people each roll a fair die once. The probability that at least two people will roll the same number?

Find the least number of equal sized square tiles that is required to cover a rectangular floor of size 4.5m x 2.7m

A salesman was given a task of selling 40 toys in 2 days. In the first day, the salesman sells half of the toys and 30% of the remaining in the next day. What percentage of the toys were left unsold by the salesman.