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The sequence is as follows:

911, 1921, 11191211, 3119111221.

Tell me the next number in the sequence and what the pattern is.

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2 Answers 2

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The next number is

132119312211

And the pattern is

The famous 'say what you see pattern' - usually done with 1s and 2s - so in the first number, there is one 9 and two ones, so the second number is 1921

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  • $\begingroup$ I was just about to post $\endgroup$
    – Shivansh Sharma
    Commented Apr 14, 2020 at 20:44
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    $\begingroup$ rot13(Yrg'f erzrzore Wbua Ubegba Pbajnl, jub vairfgvtngrq guvf frdhrapr dhvgr gubebhtuyl.) $\endgroup$
    – Cloudy7
    Commented Apr 16, 2020 at 17:08
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The next number in the series should be:

132119312211

The pattern is:

A given number in the sequence, n, describes the previous number in the sequence, n - 1. For example: 1921 describes 911 because there is one 9 and two 1s.

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  • $\begingroup$ You got the right answer and your explanation is correct, but Beastly Gerbil got the explanation spot on. Still, well done! $\endgroup$
    – Soham Konar
    Commented Apr 14, 2020 at 21:04

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