A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

I am sure no one can have two things for dinner. what are they?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What is the fastest way to double your money?

what does the below math rebus puzzle mean?

Count the number of triangles in the given picture.

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I