The product of two consecutive odd numbers is 89999. What is their sum?

Ramu says to Raju, 'Your salary is 25% more than mine'. Raju replies, 'Your salary is ...... less than mine'. What percent did Raju say?

When the first digit and the last digit of a five-digit number, which is a multiple of 72, are erased, we get 679. What is the number?

Which among the following is NOT a part of compound microscope?

In a polygon, what is the maximum number of acute angles possible?