Probability is the likelihood or chance that an event will occur. Mathematically;
Probability = Expected outcome/Total outcome.
If there are 9 balls numbered 1 through 9 placed in a bucket, then the total outcome will be 9.
If a 6 is first selected at random from the bucket and not replaced, the probability of selecting a 6 will be 1/9.
If selection is followed by a 2, the probability of selecting a 2 will be 1/8 (since the first ball was not replaced)
Pr(drawing two balls numbered 6 and 2) = 1/9 * 1/8
Pr(drawing two balls numbered 6 and 2) = 1/72
Hence the probability of randomly drawing two balls numbered 6 and 2 without replacement, in that order is 1/72
