Hard Number Series Puzzle

What number comes next in the series?

5 15 5 18 5 24 14 20 _




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Seven Robbers robbed a bank and hide the coins in a lonely place.
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However, when the 7th robber reached in the morning, they can divide the coins equally.

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Amazing Facts

Gambling

In Canada, a mathematical puzzle must be solved in order to win the lottery to classify it as a “game of skill” not gambling.