Question

write all the three digit Number with the same digit in the units and hundreds place and 0 in ones place
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Answer 1

Explanation:

If exactly one digit is a 6, there are 1⋅9⋅9+8⋅1⋅9+8⋅9⋅1=225 possibilities. If exactly two digits are a 6, there are 9+9+8=26 possibilities. If exactly three digits are 6, there is only one possibility. Thus there are 252 possibilities in total.