A box contains 30 widgets, 4 of which are defective. If 4

Last updated: 7/15/2022

A box contains 30 widgets, 4 of which are defective. If 4 are sold at random, find the probability that (a) all are defective (b) none are defective. A)1/30;2/15 B)1/657720;1/164430 C)2/15;13/15 D)1/27405;2990/5481