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?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Prove that the below maths equation is true.

8 + 8 = 91

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?