Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Can you identify the famous TV character from the rebus below?

You can hear me, but you can't touch or see me.

What am I?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

How can you leave a room with two legs and return with six legs?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?