If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

One day, I thought of ways that can be used for creating a palindrome. So I decided that I will turn into a larger number by adding the reversed digits to the original number and keep doing it till I finally obtained a palindrome.

I am not sure if this process will always result in a palindrome eventually but I was able to produce a four-digit palindrome. Can you guess my starting number?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What Adam and Eve do not have but the rest of the people have?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What English word has three consecutive double letters?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Which number should replace the question mark?