Why is a river so rich ?

What number should come in place of the question mark below?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Solve the equation in the image by looking at the pattern closely.

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What question can you never answer yes to?

what's the probability of getting a king or a queen from a pack of 52 cards?

Take away the whole and some still remain. What is it?

John bought a new car. He has a habit of eating ice cream from a particular ice cream shop while returning home from office. Whenever, he eats strawberry ice cream, he faces no problem. But whenever, he eats chocolate ice cream, the car starts giving problem. At first, he thinks, it is just a co-incidence but when this awkward incident happens for 3-4 times, he reports this problem to the company.

The mechanic of the company checks but finds no problem at all. The next day, when he stops by to eat chocolate ice cream, the car again starts giving problem.

Can you find the possible reason?

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