You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I am quite hot but become too cold if you remove the first two letters. What am I?

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

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

How is the moon similar to a dollar?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

Decode the movie name from the below picture?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

How many times in a given day, minutes and hour clock comes in a straight line ?

I am the fastest animal but cannot climb the tree. What am I?