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?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

What is the next number in the series?

15 29 56 108 208 ?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

It is always ahead of me yet I can never see it. What is it?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

What does this rebus riddle means ?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?