Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What word is pronounced the same if you take away four of its five letters?

The more of this there is, the less you see. What is it?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

I shave every day, but my beard stays the same. What am I?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

What has a bottom at the top?

I have no life, but I can die. What am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?