JEE Advance - Mathematics (1983 - No. 9)
Fifteen coupons are numbered $$1, 2 ........15,$$ respectively. Seven coupons are selected at random one at a time with replacement. The probability that the largest number appearing on a selected coupon is $$9,$$ is
$${\left( {{9 \over {16}}} \right)^6}$$
$${\left( {{18 \over {15}}} \right)^7}$$
$${\left( {{3 \over {5}}} \right)^7}$$
none of these