Math Finite
posted by Weaam .
How many Three digit numbers less than 600 can be formed from the digits: 2,3,5,6 & 8. W/ no repetitions allowed.

since our number has to be < 600, the lead digit can only be
2, 3, or 5
So we have 3 choices for the lead digit, one has been used up leaving 4 digits left for the middle and 3 digits for the unit digit
number of such numbers = 3 x 4 x 3 or 36 numbers 
Thank you, I ended up figuring it out and finishing it that way so I'm glad I understood it the way it was explained, appreciate the response!
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