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?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Prove that twice of ten is the same as twice of eleven.

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

Find the hidden tiger in the given optical illusion ?

What does Alexander the Great and Winnie the Pooh have in common?

What English word has three consecutive double letters?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

I shave every day, but my beard stays the same. What am I?