If three envelopes are selected at random, without replacement, determine the probability that none is a red envelope.

Question

jamesj · Answer

We need to know the set of envelopes from which you are drawing these three!!

anonymous · Answer

ok you want the picture

jamesj · Answer

I mean, are there 10 red and 50 blue; or .... what?

anonymous · Answer

(3) red (2)blue (1)green (1)yellow and you show the steps please, thx

amistre64 · Answer

1 - (is a red)

amistre64 · Answer

or rather:

1 - (is a red (n) is a red (n) is a red)

anonymous · Answer

7 all together.

anonymous · Answer

P( not red, not red, not red) = (4/7)(3/6)(2/5)

anonymous · Answer

how you got that answer

amistre64 · Answer

which part of the process that was taught to you before this, did you fail to grasp in order to actually understand the process that is going on in this problem?

amistre64 · Answer

or better yet, what do you have to bring to the table to assist us in helping you understand this problem?  Or do we have to reinvent the wheel?