Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Rearrange the letters in "new door" to make one word.

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

What can go up a chimney down, but can’t go down a chimney up?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

What do you get if you add 2 to 100 four times?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

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?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?