----------2.
6pink 7purple. total count 13.
without replacement draws 1 and then another. (odds of drawing purple)
first draw 7/13
second draw 6/12
7/13•6/12 = 42/156 or 21/78 or 7/26
with replacement.
first draw 7/13
second draw 7/13
7/13•7/13 = 49/169
-------------3.
total $8.40, p=n-60
60•5¢= $3.00
$8.40-$3.00=$5.40
1¢+5¢= 6¢
$5.40/6¢=90¢
1¢•90=90¢
5¢•90=$4.50
150•5¢=$7.50
90•1¢= $0.90
$7.50+$0.90=$8.40