Solution:

This can be done if you draw a five pointed star and place the balls on the corners and intersection points. See the figure to understand better.

Solution:

C7 => B8
Exchange pawn for a knight

Check-Mate

GameOver

Solution:

3/7

Explanation:
If a 31day month starts on a Friday, Saturday or Sunday it will have five Sunday, if not it will have 4 Sunday.

Solution:

fIvE thOUsAnd(5000)

Solution:

199 - 99

Solution:

NONE, holes are empty.

Solution:

192 021

If you look at it as two-digit numbers you'll see:10 11 12 13 14 15 16 17 18 19 20 21

Solution:

The bus doesn't have side mirrors and windshield wipers.

Solution:

Frank was born in room #1933

Solution:

The girl in the red shirt.
As she is eating a sandwich that looks like it's years old, and that might kill her.