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

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

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

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?