Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

A man dies of old age on his 25 birthday. How is this possible?

Which wheel of car does not rotate when you turn your car right?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

What does an Island and the letter T have in common?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

I travel all around the world but always stay in the corner. What am I?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?