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

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Keyboard words are not in alphabetical order, Why?

Can you solve the below tricky visual equation?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

What is more useful when it is broken?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?