Mental Floss

Brain Game: Lucky Ones

By BY
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It's Tuesday Test Time; good luck! What's the next number in this sequence, and why?

1, 7, 11, 27, 77, ?

Here is the ANSWER.

THE ANSWER:

107 or 111. Each progressive number represents the next smallest positive number which, when spoken aloud, uses an additional syllable.

1 = one (1 syllable)
7 = seven (2 syllables)
11 = eleven (3 syllables)
27 = twenty-seven (4 syllables)
77 = seventy-seven (5 syllables), so...

107 = one hundred and seven (6 syllables, if you use the "and"), or
111 = one hundred eleven (6 syllables if you do not use the "and").

NOTE: These puzzles almost always have alternate answers that employ different patterns. If you chose one of those, and are content with your answer, consider it to be correct. Nice job!

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