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?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

what does this below rebus represent identXQQQQQME

You need to arrange three 7 and mathematical symbols to form number 1?

Can you place six X (crosses) in below board without making three in a row in any way ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

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?