Keyboard words are not in alphabetical order, Why?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You can hear me, but you can't touch or see me.

What am I?

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?

Find the missing letter in the last circle logically in the given below picture.

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

How many triangles are there on the puzzle below?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?