In a football tournament for a victory 3 points for a draw 1 point and for defeat of 0 points are given. the team played 20 matches and never lost and gathered 34 points .skolko victories the team gained.

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Answer: 7 victories (Reshil a trial and error method, just you consider how many points will be if one victory and you compare to the number of points gained on a condition then you will consider points if two victories then if 3 and so on...)
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Answer add