Question

P(winning)=x/12,P(losing)=1/3 . find x .​

Answer 1

We know that P(n)+P(not n) = 1

x/12 + 1/3 = 1

x + 12/3 = 12   [multiplying both side by 12]

x+4=12

x=8

Answer 2

We know that,

P(winning) + P (losing) = 1

$\frac{x}{12} + \frac{1}{3} = 1 \\ \\ \frac{x + 4}{12} = 1 \\ \\ x + 4 = 12 \\ \\ x = 12 - 4 \\ \\ x = 8$

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