Question

One bag contains black, red and green pearls in a ratio of 3: 2: 7 A random account is drawn from the bag. Exercise routine a P (red)

Answer 1

P(red) = 1/6

Explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

One bag contains black, red and green pearls in a ratio of 3:2:7.

So

`(3)/(3+2+7) = (3)/(12)` of the pearls are black

`(2)/(3+2+7) = (2)/(12)` of the pearls are red.

`(7)/(3+2+7) = (7)/(12)` of the pearls are green.

P (red)

For each 12 pearls, 2 are red. So

P(red) = 2/12 = 1/6