Question

You have a bag that contains 20 quarters, 20 dimes, and 15 nickels. When randomly selecting two coins with no replacement find the following probabilities.

P(1 Dime and 1 Nickel)

Answer 1

P(1 dime then 1 nickel)= 15/208= 0.072115

or 7.2%

Explanation:

No coin replenished.

total coins =65

P(1 dime then 1 nickel) = (20/65) * (15/64) =20 * 3 / (13 * 64) = 15/(13*16)

P(1 dime then 1 nickel)= 15/208= 0.072115

or 7.2%