Question

A box contains 10 good articles and 6 with defects one article is chosen at random what is the probability that it is either good or has a defect

Answer 1

Probability =
$\frac{no \: of \: observation}{sum \: of \: observation}$
Sum of articles =16
Good=10
Bad=6

Probability of good=
$\frac{10}{16} = \frac{5}{8}$
Probability of bad=
$\frac{6}{16} = \frac{3}{8}$