Answer:
Number of Possible Sequence = 5 x 4 x 3 x 2 x 1 = 120 ways
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The answer is the first option, you multiply 14^2 by 9
3x+7=22
Subtract 7 to both sides
3x=15
Divide by 3
x=5
It would be FH
A diameter is basically the length of the line through the centre that touches 2 points on a circles edges