2007-03-25 20:46:57 · 6 answers · asked by baby gurl 1 in Environment
The probability 5 on each throw is 1/6. probability of not 5 is 5/6
The probability to get no 5's =5/6*5/6*5/6=125/216
The probability to get one 5
=1/6*5/6*5/6+
5/6*1/6*5/6+
5/6*5/6*1/6 =3*25/216
If neither 0 or one then you have at least two 5's =1-200/216=16/216=2/27
If you also want to exclude 3 fives subtract an additional 1/216 to get 15/216
2007-03-26 04:58:14 · answer #1 · answered by meg 7 · 0⤊ 0⤋
15/216=5/72 that it will appear exactly twice.
1/12 that it will appear at least twice.
2007-03-26 03:58:17 · answer #2 · answered by Goddess of Grammar 7 · 0⤊ 0⤋
3 outof 18
2007-03-26 03:49:02 · answer #3 · answered by Anonymous · 0⤊ 0⤋
5/216
2007-03-26 03:56:20 · answer #4 · answered by gentle_libran 2 · 0⤊ 0⤋
2/18 which is simplified to 1/9
Hope this helps !
2007-03-26 03:50:54 · answer #5 · answered by ♥ уσυ вєℓσηg ωιтн мє ♥ 7 · 0⤊ 0⤋
my maths exam is over .pls dont bother me again.
Its 3 out of 18
2007-03-26 03:50:46 · answer #6 · answered by Anonymous · 0⤊ 0⤋