Asked by angelika
A jar contains 2 pennies, 3 nickels and 6 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins.
Round your answers to 3 decimal places.
Find the probability X = 10.
Find the probability X = 11.
Round your answers to 3 decimal places.
Find the probability X = 10.
Find the probability X = 11.
Answers
Answered by
oobleck
P(nn) = 3/11 * 2/10
That is the only way to get 10 cents in 2 coins
To get 11 cents, you have
P(pd) = P(dp) = 6/11 * 2/10
so P(11 cents) = 2 * 6/11 * 2/10
That is the only way to get 10 cents in 2 coins
To get 11 cents, you have
P(pd) = P(dp) = 6/11 * 2/10
so P(11 cents) = 2 * 6/11 * 2/10
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