The total number of positive integral solution of 15<x1+x2+x3≤20 is equal to a. 685 b. 785 c. 1125 d. none of these

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The total number of positive integral solution of {15}<{x}_{{1

Question

The total number of positive integral solution of $15 < x_{1} + x_{2} + x_{3} \leq 20$ is equal to a. $685$ b. $785$ c. $1125$ d. none of these

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The total number of positive integral solution of

15 < x_{1} + x_{2} + x_{3} \leq 20

is equal to a.

685

785

1125

d. none of these

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Question Text

The total number of positive integral solution of

15 < x_{1} + x_{2} + x_{3} \leq 20

is equal to a.

685

785

1125

d. none of these