Sample space = { 1, 2, 3, 4, 5, 6}
Prime numbers = ( 2, 3, and 5)
Pr(prime Nos) = number of required outcometotal possible outcome=36\frac{\text{number of required outcome}}{\text{total possible outcome}} = \frac{3}{6}total possible outcomenumber of required outcome=63 = 12\frac{1}{2}21
