Question
How many 5's are there followed by 3 but not preceded by
7? 7 5 3 1 6 8 5 8 4 3 5 3 7 1 6 1 5 8 6 4 5 3 2 5Solution
7 5 3 1 6 8 5 8 4 3 5 3 7 1 6 1 5 8 6 4 5 3 2 5
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