The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

What Adam and Eve do not have but the rest of the people have?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

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?

Count the number of triangles in the picture below:

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.