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please explain this. 1) In a sample of 800 adults, 242 said that they liked sugar cereals. Three adults are selected at random without replacement.

please explain this.

1) In a sample of 800 adults, 242 said that they liked sugar cereals. Three adults are selected at random without replacement. Find the probability that all three like sugar cereals.

2) In a sample of 80 adults, 25 said that they would buy a car from a friend. Three adults are selected at random without replacement. Find the probability that none of the three would buy a car from a friend.

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