A bag holds 11 beads 7 of the beads are red the rest are white two beads are taken at random work out the probability that one o
ne bead of each colour is taken. You must show your working out
1 answer:
Answer:
28/55
Step-by-step explanation:
total no of beads are 11
red beads are 7
and white beads are 4
no of ways to take 2 beads from 11 beads are 11c2
that is( 11*10)/2=55
no of ways to take 1 red bead from 7 is 7c1 that is 7
no of ways to take 1 white bead from 4 is 4c1 is that is 4
required probability is( 7*4)/55=28/55
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hope that helped :)
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