Question

Probability question

Answer 1

\(\large \color{black}{\begin{align}
& \normalsize \text{10 black and 5 white balls. Two balls are drawn from the}\hspace{.33em}\\~\\
& \normalsize \text{urn one after the other without replacement. What is the}\hspace{.33em}\\~\\
& \normalsize \text{ probability that both drawn balls are black? }\hspace{.33em}\\~\\
\end{align}}\)

Answer 2

HI!!

Answer 3

what is the probability that the first one is black?

Answer 4

robability that the first one is black=2/3

Answer 5

hii!

Answer 6

ok now how many black balls are left in the urn?

Answer 7

9

Answer 8

right
and how many balls total?

Answer 9

14

Answer 10

so therefore the probability that the second ball chosen is black, given that the first ball was black, is ?

Answer 11

9/14

Answer 12

exactly

Answer 13

your final job is
\[\frac{2}{3}\times \frac{9}{14}\]

Answer 14

3/7

Answer 15

ok looks good