Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Count the squares in the matchstick puzzle below?

I taste better than I can smell. Who am I?

There is a place where if I stand up straight, I will still be considered sideways.

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

John was piloting a plane behind a car but was never able to overtake it. Why?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?