117.5 is the average.
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4441.5 is the average.
First, take 137 ÷ 2 and you get 68.5. 68.5 is the average. What two numbers average 68.5, 68 and 69. The same two numbers equal 137.
98+120 = 218 218/2 = 109
84+64+98+1 ---- 4
143+98+128=369369/3=123