Question
Find the average of first 20 multiple of 7?
Answer: Option B
 - Average = 7 (1+2+3+…….+20) = 7 x 20 x 21 = 73.5 20 20 x 2
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 - Average = 7 (1+2+3+…….+20) = 7 x 20 x 21 = 73.5 20 20 x 2
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