SOLUTION: When I turn my calculator upside down, the digits 0,1,2,5,6,8 and 9 still appear as digits. For example, when I turn my calculator upside down, 65259 remains the same- that is, it

Question 995060: When I turn my calculator upside down, the digits 0,1,2,5,6,8 and 9 still appear as digits. For example, when I turn my calculator upside down, 65259 remains the same- that is, it stays 65259. How many whole numbers between 100 and 1000 remains the same when I turn my calculator upside down?
A. 6x7
B. 6x5
C. 6x5x6
D. 6x7x6
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

the first digit can be any of , , , , ,
the last digit is determined by the first digit (has to be it's "flip")
the middle digit has to be one that flips to itself: , ,, , or
possible numbers
so, answer is:
B. or
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