1. each of the 12 cards shown has a number and a color or pattern. each card is equally likely to be drawn. find each probability.

a. p(striped)
b. p(even)
c. p(not polka-dot)
d. p(1, 2, 3, or 4)
e. p(solid gray or striped)

A) There are four cards of striped pattern, hence
    
b) There are twelve cards that have even numbers, hence
    
c) There are eight cards that aren't in polka dot pattern, hence
    
d) All cards have either the number 1, 2, 3 or 4 on them, hence 
    
e) There are a total of eight cards that are solid grey or striped, hence
    

Step 1: 6x-10=1; step 2: 6x=11