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

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

Rearrange the letters in "new door" to make one word.

If 1+9+8=1, what is 2+8+9?

A bomb exploded in a room full of married couples and no one died. How?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

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.

Which fur should we be getting from the Lion?