3. There are 6 white beads and 5 black beads in your pocket. You randomly pull...

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Question

3. There are 6 white beads and 5 black beads in your pocket. You randomly pull the beads one by one out of your pocket and pl

Answer 1

Answer #1

here P(third bead is first white) =P(1st bead is black and 2nd black and 3rd white)

=(5*4*6)/(11*10*9)=4/33 =a/b

from above a =4 and b=33

therefore value of a+b =4+33 =37

Answer 2

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