Question

If two balls are drawn without replacement from a box containing 3 red balls, 2 black balls, and one green, what is the probability of getting 2 red balls?

Answer 1

\( \color{Black}{\Rightarrow \Large {3 \over 6} \times {2 \over 5}}\)

Answer 2

Note how I decreased one from both numerator and denominator because we're not replacing.

Answer 3

ok..so I cross multiply?

Answer 4

Something is getting cancelled :)

Answer 5

\( \color{Black}{\Rightarrow \Large {1 \over 2} \times {2 \over 5} }\)

Answer 6

The 2/5 right?

Answer 7

Nu uh

Answer 8

I simplified the 3/6 to 1/2

Answer 9

oh okay..

Answer 10

so whats the answer..?

Answer 11

\( \color{Black}{\Rightarrow \large {2 \over 10} = ...? }\)

Answer 12

Ummmm...and now I have 1/5 is that right?