Question

One coin is randomly selected from a jar containing 70 nickels, 100 dimes, 80 quarters, and 50 one-dollar coins. What is the probability of a value less then $1?

Answer 1

Find the probability of a value less than $1
Since nickels, dimes and quarters are all less than $1 and there are a total of 70+100+80 = 250 coins of them
And the total coins in the jar is 250+50=300 coins
We get, the probability of a value less than $1 is 250/300 = 5/6.