When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

During which month do people sleep the least?

The more you take me, the more you leave me behind.
Who Am I?

If a wheel has 54 spokes, how many spaces are there between the spokes?

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?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?