If you say my name, I will no longer exist. What am I?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

Find the next number in the series below

21 32 54 87 131 ?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

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?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?