## nishathomp 3 years ago One of the 7 guns was Walt's favorite type - a Desert Eagle. If Walt randomly buys 5 weapons, what is the probability he got the Desert Eagle?

1. xbathxsaltx

1 out of 20

2. nishathomp

thanks but the answer key says 5/12 @xbathxsaltx

3. xbathxsaltx

oh. dang. i tried tho

4. nishathomp

that i true thanks for trying to help :D i really do appreciate it :]

5. CliffSedge

There are 5 attempts at a 1/7 chance. It's hard to see how the probability is 5/12 . . .

6. xbathxsaltx

if anything id think itd be 5/7

7. CliffSedge

Are you sure there are no other conditions, like gets only one, or there are only one of each of the seven available?

8. nishathomp

this is the question that was right before it 3. Before leaving, Walt gets news that his competition may try to attack him. He decides to arm himself with lots of weapons before he leaves. Walt goes to his local arms dealer and randomly buys 5 weapons from a total of 7 guns and 5 rocket launchers. What is the probability that Walt buys only 2 guns? that answer was 648

9. CliffSedge

Ah, randomly buys 7 *weapons* that still includes the 5 rocket launchers. There are a total of 12 things to choose from.

10. CliffSedge

That's 5 attempts at a 1/12 chance.