Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and a single one of his purchases: the wolf, the goat, or the cabbage. If left unattended together, the wolf would eat the goat, or the goat would eat the cabbage. The farmer’s challenge was to carry himself and his purchases to the far bank of the river, leaving each purchase intact. How did he do it?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag