What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

What runs around the whole yard without moving?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

By what process could you make a 'Tea-Table' into food?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

What is the coolest letter in the alphabet?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?