Answer
$np_{0.2}$ = 500 x 0.2 = 100
$np_{0.1}$ = 500 x 0.1 = 50
$np_{0.45}$ = 500 x 0.45 = 225
$np_{0.25}$ = 500 x 0.25 = 125
Work Step by Step
$np_{0.2}$ = 500 x 0.2 = 100
$np_{0.1}$ = 500 x 0.1 = 50
$np_{0.45}$ = 500 x 0.45 = 225
$np_{0.25}$ = 500 x 0.25 = 125