This is a combinations problem.
The total number of possible 2-item combinations is (1000 choose 2)
The number of 2-defective combinations is (300 choose 2)
The probability =
Answer: 425.980
The 9 turns into a 0 and the 7 turns into 8
I think this is right I don't know you'll have to double check
He had 10822 because 410 x 10= 10660 and 10660 - 162= 10822
He receives 8.5% <span>commission on sales from $70,000 to $100,000, therefore the commission is:
comission = 8.5%($82000) = (85/1000)(82000)
= 6979
that is his commission</span>