Question

A jar contains black and white marbles, which are drawn with replacement. The probability of selecting a black marble is 0.34. What is the probability of selecting one white marble and one black marble

Answer 1

Picking black marble 1st = 0.34
Picking white marble 1st = 0.66

Picking black marble 2nd = 0.34
Picking white marble 2nd = 0.66

Probability of one white and one black is 0.34 + 0.66 or 0.66 + 0.34