supposes you roll a die find each probaility
3.p(6) 4.p(prime) 5.p(a factor of 6 ) 6.p(6 or prime) 7.p(6 or factor of6) 8.p(not a factor of 6)
9.which of the events in exercises 3-5 are mutually exclusive
10.which of the events in exercises 3-8 are complementary
x=y+3 2x-3y=7
2x+5y=6 4x=3y=23
[ 此贴被Tony&Jackie在2008-02-25 12:15重新编辑 ]