How can you make number one disappear by adding something to it?

I have branches, but no fruit, trunk or leaves. What am I?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

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

I am sure no one can have two things for dinner. what are they?

Can you decipher the following common phrase?

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

Count the number of times the letter "F" appears in the following paragraph:

FAY FRIED FIFTY POUNDS OF
SALTED FISH AND THREE POUNDS
OF DRY FENNEL FOR DINNER FOR
FORTY MEMBERS OF HER FATHER'S FAMILY.

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?