Question

in a box there are 9 red, 7 blue, and, 4 green balls one ball is picked up randomly what is the probability that it neither red nor green​

Answer 1

Step-by-step explanation:

Antarctic blue whale

The Antarctic blue whale (Balaenoptera musculus ssp. Intermedia) is the biggest animal on the planet, weighing up to 400,000 pounds (approximately 33 elephants) and reaching up to 98 feet in length.

Answer 2

Answer: n( R)= 9

n(B)= 7

n(G)= 4 and n(S) = 9+7+ 4 = 20

So, P(R) =  n( R) / n(S) = 9/20

P(G) = n(G) / n(S) = 4/20

Then.,

P( R U G ) = P(R) +P(G)  = 9/20 + 4/20 = 13/20

Finally,

P ( R U G ) bar = 1 - P( R U G ) = 1 - 13 /20 = 7/20  

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