Hahahaha so many people in here can't use basic maths or probability.
The OP's method is correct so people talking about inclusive probability need to shut up. This is mutually exclusive probability.
English
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Are you saying I can't or others?
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No you are right
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Okay thanks dude.
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I may have worded slightly differently and shown it as a 1/6^4 = 1/1296 chance = 0.077% but same thing.
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Yeah appears to be the same number :P