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

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

What seven-letter word has hundreds of letters in it?

If six children and two dogs were under an umbrella, how come none of them got wet?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

What is the riddle which can be asked all day with a different correct answer each time.

A bomb exploded in a room full of married couples and no one died. How?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?