Before Mount Everest was discovered, what was the highest mountain in the world?

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

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

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?

Can you find the key in the picture below?

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

Our product and our sum always give the same answer. Who are we?

What number divided by 4 is the same as that number minus 4?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.