The Card Number Validation hole will go live in . Why not try and solve it ahead of time?

xyangst

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hi

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35 / 108 Holes

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51 / 58 Langs

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28 / 75 Cheevos

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Fibonacci in JavaScript in Bytes Play Hole

543rd in JavaScript and 5,521st overall.

Last tested .

Bytes Chars Submitted
53 53
61 61
71 71
73 73