Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

During which month do people sleep the least?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

If eleven plus two equals one, what does nine plus five equal?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

I know a nine-letter word having only one vowel.
Do you ?