What has 13 hearts but no other organs?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Solve the puzzle by telling what does below picture means.

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?