JEE Math Practice Question
Let N denote the number that turns up when a fair die is rolled. If the probability that the system of equations $$x + y + z = 1$$ $$2x + \mathrm{N}y + 2z = 2$$ $$3x + 3y + \mathrm{N}z = 3$$ has unique solution is $${k \over 6}$$, then the sum of value of k and all possible values of N is :
- A.18
- B.21
- C.20
- D.19
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