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Ans. 0

1 Answer

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If x1, x2 and x3 are in the range (2,6), (6,10) and (0,5) respectively then the maximum value they can have is 5, 9 and 10 respectively which sums up to 18. So no matter what value they have they wont be able to achieve 20 as their sum.

Hence answer = 0

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