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?

Take away the whole and some still remain. What is it?

In a particular village, only two barbershops exist.

The first shop has a handsome barber with a neat haircut who is handsomely dressed in clean clothes and is extremely humble with his body language. The place is clean and looks hygienic.

In the second shop, you can find a barber with shabby clothing. His hairs are weirdly cut and his clothes still have the stains from last night's dinner. The place is not clean as well and reeks a bit.

You visit the village for the first time and decide to get your haircut. Which barbershop will you like to go for that and why?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

If 21x = 79x, what is the value of x?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Eight of us go fourth, not back, to protect our king from an attack. What are we?