Question 97

The number of non-negative integral solutions to the equation x + y + z = 14 is:

Solution

The direct method to solve the questions for non-negative integral solution is finding the value of

$$n+r-1_{C_{r-1}}$$

Here, n= 14 r=3

Substituting the values, we get $$\ 16_{C_2}$$which is 120.


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