First of all the repeated digits numbers are 66,77 and 99 Total 3
Numbers beginning with 6 Total 3 (63,67 and 69).
Numbers begin with 7 Total3
and begin with 9 Total 3.
answer is 12
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Angle 6, angle 4, angle 3, and angle 2 are all exterior angles.
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2x squared +1 (-)x squared -7 is
a.) x squared +8
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