Question

a bag contain 5red a bag contains 5 red balls 8 white balls 4 green balls and 7 black balls .if one ball drawn at random find the propability one black not green

Answer 1

P(1 black)=7/24
P(not green)=20/24
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Answer 2

Total no. Of balls are 5+8+4+7=24now favourable outcomes =total no. Of balls -no.of black balls + green balls=24-11=13;so probability is 13/24