Test case 1;

Enter percentage of defective units produced -> 1.75

Enter number of units to sample -> 100

Enter number of defective units in sample -> 5

Average number of defective units: 1.75%

Selecting 100 units with 0 being defective has a probability of: 0.167

Selecting 100 units with 5 being defective has a probability of: 0.023

Test case 2;

Enter percentage of defective units produced -> 18

Enter number of units to sample -> 10

Enter number of defective units in sample -> 4

Average number of defective units: 18.00%

Selecting 10 units with 0 being defective has a probability of: 0.134

Selecting 10 units with 4 being defective has a probability of: 0.067

I'm doing a coding homework which involves knowledge in statistics.

formula: x!=(x^x e^x )(2 x+ 1/3 ) has to be used for last two calculations which I don't know how to get those 2 values. (zero defective and n defective out of given units)

Can you help me to figureout how to come up with exactly matching values?

(confused part highlighted)