While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

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

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

What can go up a chimney down, but can’t go down a chimney up?

You need to arrange three 7 and mathematical symbols to form number 1?

What has 88 keys?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10