A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

When is the top of a mountain similar to a savings account?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Take one out and scratch my head, I am now black but once was red. What am I?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

John is on an island and there are three crates of fruit that have washed up in front of him. One crate contains only apples. One crate contains only oranges. The other crate contains both apples and oranges.

Each crate is labelled. One reads 'apples', one reads 'oranges', and one reads 'apples and oranges'. He know that NONE of the crates have been labeled correctly - they are all wrong.

If he can only take out and look at just one of the pieces of fruit from just one of the crates, how can he label all of the crates correctly?