(i) Total number of marbles marked with the number from 1 to 6 = 6 Therefore n(S) = 6 Number of marble marked with 2=1 Therefore n(E) = 1 Therefore Required probability = $$\frac{n(E)}{n(S)}=\frac{1}{6}$$ (ii) Number of marble marked with 5 = 1 Therefore n(E) = 1 Therefore Required probability = $$\frac{n(E)}{n(S)}=\frac{1}{6}$$