this is what it says....
In 1-4, find the probability of getting the given result when two number cubes are rolled.
1.a sum of 4
2.a sum less then 6
3.a sum of 7 or 11
4.a pair of 5s
2007-12-19 13:18:45 · 4 answers · asked by Anonymous in Entertainment & Music ➔ Polls & Surveys
The two dice are independant of each other - what you get on one does not effect what happens to the other.
So each die has the numbers 1-6, equal chance of each. That means there are 6 values the first die can get, and 6 which the other die can get, for 36 values. (You can make it simpler, since you do not care which die is which, but let's save that for later.)
So out of 36 possible rolls, how many of them add up to 4?
1, 3
2, 2
3, 1
Keep going for the other problems.
2007-12-19 13:32:05 · answer #1 · answered by nowaynohow 7 · 0⤊ 0⤋
a million. Assuming those cubes are numbered a million-6 on consecutive faces, of 36 achievable consequences, basically 3 rolls supply a 4. a million-2, 2-a million,2-2. So 3/36 = 8.33% 2. Sum < 6 could properly be a million-a million, a million-2, a million-3, a million-4, 2-a million, 2-2, 2-3, 3-a million, 3-2 or 9/36 = 25% 3. 6 rolls supply 7, and basically 2 supply 11. So 9/36 = 25% 4. Pair of five's has a million/36 = 2.seventy 8%
2016-12-11 09:41:12 · answer #2 · answered by ? 4 · 0⤊ 0⤋
im good in math but dont have it till next semester so my brain isnt programmed that way....so the answer is...heck if i know
2007-12-19 13:23:02 · answer #3 · answered by Anonymous · 0⤊ 0⤋
study this section in your math text:
PERMUTATIONS, COMBINATIONS, and PROBABILITY
2007-12-19 13:22:54 · answer #4 · answered by Mike 7 · 0⤊ 0⤋