Which point will the car reach to go out?

Replace the question mark with the correct number below.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What begins with T, ends with T, and has T in it?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

What am I?

What does this rebus means ?

What is more useful when it is broken?

I don't get anymore wetter, no matter how much rain falls on me.