SOLUTION: a locker combo system uses three digits from 0 to 9. How many different three digit combos with no digit aare possible?

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Question 28350: a locker combo system uses three digits from 0 to 9. How many different three digit combos with no digit aare possible?
Answer by venugopalramana(3286) About Me  (Show Source):
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a locker combo system uses three digits from 0 to 9. How many different three digit combos with no digit aare possible?
SINCE THERE ARE 10 DIGITS TO CHOOSE FROM AND REPETETION IS ALLOWED
WE CAN HAVE 10*10*10=1000 NUMBERS INCLUDING 000 POSSIBLE.
with no digit aare possible?..WHAT IS THIS ?WRITE PROPERLY