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

Queen Elizabeth organised a royal party.

To Avoid uninvited guest royal family set a password.
Jack (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.
Second guest comes , the security person said 'six' and guest replied with 'three'.

Jack thought is enough and he walked to the entry point. The security person said 'eight' , Jack replied smilingly 'four'.
He was immediately thrown out of the party. why ?

Where do you go to learn how to make ice cream?

Aaron, Brad, Christopher, Danny and Elvis decided to play a game of tiddlywinks. In this game they decided that one win will get 1 point for winning, 0 for losing and 1/2 in case of a tie.

They finished the game in alphabetical order and it was found that the scores were different for each person.

Based on the following two statements, can you find out the result of the individual games?
Brad: No one could finish like me, without a loss.
Elvis: No one played worse than me, I finished without a single win.

What begins with T, ends with T, and has T in it?

10+10 and 11+11 can give you the same answer.

Explain how?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Complete the table series riddle by finding the number that can replace "??".