Question

A box contains 10 whije balls, 20 reds and 30 greens. Draw 5 balls with replacement... what
is the probability that:
a. 3 white and 2 red
b. All 5 are the same color​

Answer 1

$\bf Hey\:There\:!$

Question:

A box contains 10 white balls, 20 reds and 30 greens. Draw 5 balls with replacement… what is the probability that:

a. 3 white and 2 red

b. All 5 are the same color

Solution:

$➳\boxed{\sf{\red{\large{Probability=\dfrac{Favourable\:cases}{Total \:cases}}}}}$

Total Cases=10+20+30=60 balls

A.

Favourable cases = 3 white and 2 red

➳3+2=5 balls

${\sf{\blue{Probability=\dfrac{5}{60}}}}$

B.

Favourable cases=5

${\sf{\blue{Probability=\dfrac{5}{60}}}}$