Move four matchsticks to the below square to form three squares?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Find the number of squares in the below picture

Which Burger Is Different in below image?

I am an odd number. Take away a letter and I become even. What number am I?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?