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?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

How can you take 2 from 5 and leave 4?

Can you count the number of triangles in the picture below?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Who has married many women but was never married?

How could a baby fall out of a twenty-story building onto the ground and live?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?