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

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

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.
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