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

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Prove that the below maths equation is true.

8 + 8 = 91

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

What kind of band never plays music?

What is the end of everything?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

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 ?