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

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

Can you identify if it's a murder or a suicide ?

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

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

I make two people out of one. What am I?

Find the next number in the series below.

6 18 270 72090 ?

What Adam and Eve do not have but the rest of the people have?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?