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attashe74 [19]
3 years ago
11

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
Mathematics
1 answer:
Anvisha [2.4K]3 years ago
3 0

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

this question has already been answered on someone else's account so know this answer is 100% correct

hope that helped :)

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