Sir pls solve this question.
Asked by rsudipto
14th December 2018,
9:51 AM
Answered by Expert
Answer:
15 < x1 + x2 + x3 ≤ 20
x1 + x2 + x3 = 16 + r where r = 0, 1, 2, 3, 4
Number of positive integral solutions
x1 + x2 + x3 = 16 + r
16 + r - 1C3 - 1 = 15 + rC2
Total number of solutions = 
Answered by Expert
17th December 2018,
11:02 AM
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