In Keno, the casino selects 20 numbers at random from integers 1, 2, ..., 80. In how many ways can this be done? NOTE: In keno, order in which numbers appear is not important. Group of answer choices:...

In Keno, the casino selects 20 numbers at random from integers 1, 2, ..., 80. In how many ways can this be done? NOTE: In keno, order in which numbers appear is not important. Group of answer choices: P(80, 20) 80 x 20 C(80,20) 80x80x80 None of the above