Question 28350
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