How many total numbers are available in the combination?
1/(Total-2) = ?
A locker combination has three nonzero digits, and digits cannot be repeated. The first two digits are 1 and 2. What is the probability that the third digit is 3?
2 answers
A locker combination has 3 nonzero digits, and the digits cannot be repeated. If the first two digits are even, what is the probability that the third digit is even?
1 answer