I shave every day, but my beard stays the same. What am I?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

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?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Find the hidden tiger in the given optical illusion ?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?