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?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

What is common among 11, 69, and 88?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Can you find a five letter word that is left with only two letters if one is removed?

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

There was an aeroplane crash, every single person died, but two people survived. How is this possible?