6. In the Powerball lottery, the winning numbers are chosen by selecting 5 white balls from a bin containing 69 balls and then selecting one red ball from a bin containing 26 balls. Balls are removed from the bin as they are chosen. To win the top prize, you must match all of these numbers. You may win the jackpot with the white-ball numbers in any order. a. How many possible unique lottery tickets are possible? b. Find the probability of winning the top prize in the Powerball lottery. Assume one ticket is purchased