Can you replace the question mark with the correct number in the below table sequence?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

It belongs to you, but other people use it more than you do. What is it?

What is black when you buy it, red when you use it, and gray when you throw it away?

Can you make a six-letter word using the letters N, A and B ?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

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?

Find the 8 in the below-given Image.

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

Find the missing number in the sequence below: