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JulsSmile [24]
3 years ago
11

A bag contains 3 red, 4 black, and 2 green balls. One ball is drawn at random from the bag, find the probability that the drawn

ball is black. URGENT!!!
Mathematics
1 answer:
Kazeer [188]3 years ago
8 0
There are total (3r + 4g + 2b) = 9 balls in the bag . Two balls are drawn, our event happens if exactly one of them is a green ball. The required probability of happening of the required event is, therefore

= {C(4, 1)xC(5, 1)}/ C(9, 2) = (5x4)/36

= 5/9 .
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The number of sea stars is 64.

What is a ratio?

Comparing two amounts of the same units and determining the ratio tells us how much of one quantity is in the other.

In general, a: b, which can be interpreted as "a is to b," is used to denote a ratio between two quantities, let's say "a" and "b."

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