A cylinder with radius 2 units is shown below. Its volume is 75 cubic units. Find the height of the cylinder.
1 answer:
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a. The probability of picking exactly two $10 bills is
b. The probability of picking at most one $5 bill is
<em><u>Explanation</u></em>
Number of $10 bills
and number of $5 bills
Total number of bills= 5+3 = 8. You need to randomly pick 4 bills, so the total possible outcome
<u>a. </u>
For getting exactly two $10 bills, you need to pick two $10 bills and two $5 bills. That means we will pick two $10 bill from 5 bills and two $5 bills from 3 bills.
So, the probability
<u>b.</u>
For getting at most one $5 bill, you need to pick <u>either zero or one</u> $5 bill.
If you pick <em>zero</em> $5 bill, that means there are <em>four</em><em> </em>$10 bills
and if you pick <em>one </em>$5 bill, that means there are <em>three </em>$10 bills.
So, the probability