Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

What breaks yet never falls, and what falls yet never breaks?

How many triangles are there on the puzzle below?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Tarang football website was hacked by one of the players. Jack, the coach of Tarang has pointed out five players as the possible hacker.
Each suspected player made three statements from each suspected player and out of which two are true and one is false.

Joseph
A) I have not hacked the website.
B) I know nothing about hacking.
C) John did it.

Hazard
A) I have not hacked the website.
B) The website was attacked by one of the players.
C) I hate Shelly

Remy
A) I have not hacked the website.
B) I have never seen Oscar in my entire life.
C) I am sure John did it.

John
A) I have not hacked the website.
B) I am sure Oscar did it.
C) Joseph was lying when he said he did it.

Oscar
A) I have not hacked the website.
B) I am sure Hazard did it.
C) I used to be friend with Remy.

So who hacked the website?

Can you find a five letter word that is left with only two letters if one is removed?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?