How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

How many times in a given day, minutes and hour clock comes in a straight line ?

Solve this riddle by finding the odd one out from the rest.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

What work can one never finish?

How can you make a TV, a bed, a dog, and a car liquid?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

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?