huee678 huee678
  • 24-07-2018
  • Mathematics
contestada

can you explain the answer for me please and thank you

can you explain the answer for me please and thank you class=

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sqdancefan
sqdancefan sqdancefan
  • 02-08-2018

There's a formula for that.

... P(A∪B) = P(A) + P(B) - P(A∩B)

Filling in the given values, we have

... P(A∪B) = 2/3 + 4/5 - 3/5 = 10/15 + 12/15 - 9/15

... P(A∪B) = 13/15 . . . . . . . . matches selection B

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