How many times can you subtract the number 5 from 25?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Can you move 2 matchsticks to form four equal sized squares.

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

What's the only room from which no one can enter or leave

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

How many Watermelons are there in the below picture?

In the given picture, in how many ways can you read the word "Tiger"?

Complete the table series riddle by finding the number that can replace "??".

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?