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?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

I look at you, you look at me I raise my right, you raise your left. What am I?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?