Solution:

The letter 'n'.

wiNdow - widow
door - doNor

Solution:

Draw an S in front of the IX and it spells SIX. No one said the line had to be straight.

Solution:

An autobiography

Solution:

A parachute that didn't open.

Solution:

fsh

no eye => no i
=> fish -i
=> fsh

lolz

Solution:

F

Explanation: The letters are the first letter of each of the twelve months. The second month is February.

Solution:

1,2, & 3

1 x 2 x 3 = 6 and 1 + 2 + 3 = 6

Solution:

A Hole

Solution:

RobInHood

Solution:

prinka is 10, in a system that awards five for each vowel.