Answer:
The probability that you will get a 3-digit combination correct is:
1/720
Explanation:
We are asked to find the probability that you will get a 3-digit combination correct if no digits in the combination can be repeated.
Now the favorable number of outcomes=1 (which is the correct combination)
Total number of outcomes= 10×9×8
(first place has 10 choices of digits from 0-9 ,second has 9 choices excluding the one at first place and third place has 8 choice)
=720
Probability= number of favorable outcomes/total number of outcomes
= 1/720