I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

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.

What does an Island and the letter T have in common?

What time is it when an elephant sits on a fence?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. 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 ?