* Tricky Probability problem.

[dddanny2006]

A group of pictures of butterflies contains 10 pictures. Jim had bought 3 of them. If 2 pictures are to be picked out from the 10 pictures, what is the probability that both pictures are not those that were already bought by Jim?

14/15
3/5
6/13
7/15
7/10

Please help me solve this.My concepts have all jumbled up.Prefer to solve this the Vimeo method that you taught.

Correct answer is D

Source-Beatthegmat Site

[RonPurewal]

BTG isn't an original source. Per the forum rules, we need the original source of the problem.

Thanks.

[RonPurewal]

(... and I have no idea what "vimeo method" is.)

[dddanny2006]

I meant your vidoe on Vimeo,the methodology followed there.

(... and I have no idea what "vimeo method" is.)

[RonPurewal]

We still need the original source of the problem.