You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

How can a man go eight days without sleep?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Can you find the thief by just looking at the picture below?

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