I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

what's the probability of getting a king or a queen from a pack of 52 cards?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

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

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

Using Only Five 5's and any mathematical operator make sum as 37

Spot the cat in the picture below

Prove that the below maths equation is true.

8 + 8 = 91