Solution not provided.
Ans. S = {FFF, FFR, FRF, RFF, RRF, RFR, FRR, RRR}
A lot consists of 12 good pencils, 6 with minor defects and 2 with major defects. A pencil is chosen at random. Find the probability that the pencil does not have:
(a) any defect (b) major defect