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# Probability:Find X watch

1. (Original post by AverageHuman)
I got the answer as x=32.60291625 degrees
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2. Combinations are 1,3 (x2) or 2,2

Therefore:

2x/360 . (360-3x/)360 + (2x/360)^2 = 16/81

Meaning x^2-360x+12800=0

x=320 or x=40.

x=40 is the solution.
3. Combinations are 1,3 (x2) or 2,2

Therefore:

2x/360 . (360-3x/)360 + (2x/360)^2 = 16/81

Meaning x^2-360x+12800=0

x=320 or x=40.

x=40 is the solution.

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