If each term in the sum A1 + A2 +....An is either 7 or 77 and the sum equals 350 which of the following could be equal to n :
1) 38
2) 39
3) 40
4) 41
5) 42[/img]
1) 38
2) 39
3) 40
4) 41
5) 42[/img]
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Stendulkar
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