Out of curiosity, the way I attempted to solve this was through chain. Though I seem to have erred right at the end. 3x chains, J or H (assume J) * H * Other (i) Other, J or H , H (ii) J or H , Other, H (iii) 2/5 * 1/4 * 3/3 = 6/60 3/5 * 2/5 * 1/5 = 6/60 2/5 * 3/4 * 1/3 = 6/60 added = 18/60 = 3/10 (...