What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Kareena is older than Katrina and younger than Karishma. Isabelle is younger than Bipasha and Karishma. Bipasha is older than Karishma. If Kareena and Isabelle are the same age, who's the youngest?

I know a nine-letter word having only one vowel.
Do you ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

I am white when I am dirty, and black when I am clean. What am I?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

How can you leave a room with two legs and return with six legs?

Can you count the number of quadrilaterals in the picture below?