probability

Q1: A Box contains ((12 BALLS)) 6 RED,3 YELLOW AND 3BLUE

WHAT IS THE PROBABILITY OF GETTING RED AND BLUE...?(IN PERCENTAGE)

Q2: A PIECHART contains ((8SLICES)) 4 RED , 2 BLUE , 2 GREEN 

A:WHAT IS THE PROBABILITY OF GETTING RED...?

B:WHAT IS THE PROBABILY OF GETTING BLUE AND RED...?

--------------------------------------------------------------------------------------

ANSWER KEY

1-    9/12=3/4

2A-     4/8=1/2

2B-      6/8=3/4