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

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

Below rebus represent famous DiCaprio movie. Can you name it?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

Find the number of squares in the below-given picture.

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

2, 3, 5, 9, 17, _ What is the next number in the sequence?