Mathematics
Mathematics, 22.01.2022 01:50, makeithappen60

We call a number peachy if every digit in the number is either a $3$ or next to a $3.$ For example, the numbers $333,$ $83,$ $303,$ and $3773$ are all peachy, but the numbers $32523,$ $786,$ $340,$ and $3999$ are not peachy. How many positive $2$-digit numbers are peachy

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We call a number peachy if every digit in the number is either a $3$ or next to a $3.$ For example,...

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