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Line Above 6 in probability

Why is there a line above the 6 when expressing probability for a die?

P(number between 1 and 6)=16=0.1¯6

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It’s a mathematical notation that indicates that the number(s) underneath it are repeating.

1/6 is equal to 0.166666666..., and that 6 keeps on repeating.

So, instead, we can write 0.1\overline{6}

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Thank you so much! I was confused for the longest time!