What building has the most stories?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

It is always ahead of me yet I can never see it. What is it?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

What does below pictogram mean?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Why is the Hole below a Lock?