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

The Little ant seems to be always confused. Do you know why?

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

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Can you replace the question mark with the correct number?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

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

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

How can you drop a raw egg from a height onto a concrete floor without cracking it?