Q76. A box contains 10 red, 30 white, and 20 black marbles. When a marble is drawn at random, what is the probability that it is either red or white?Mathematics — NUST Mock 3 — Question 76 of 200A. 1/6B. 1/3C. 1/2D. 2/3Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →