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Et Tu, Brute? (Posted on 2005-08-02) Difficulty: 2 of 5
What follows in this sequence?

1, 2, 3, 3, 2, 3, 4, 5, 3, 2, 3, 4, 5, 5, 4, 5, 6, 7, 5, 4, 5, ...

See The Solution Submitted by Erik O.    
Rating: 3.5000 (4 votes)

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Solution A more Cesarean solution | Comment 8 of 18 |

Write the integers, beginning with 1, in roman numerals (using capital letters in a sans-serif font.) The number of strokes used to write each consecutive roman numeral is the sequence given above.

Since the sequence takes you from 1 (I) to 21 (XXI), the next terms are 22, 23, 24, 25, and so on, or XXII, XXIII, XXIV, XXV, etc. That makes the next terms in the sequence 6, 7, 7, 6, etc.

Now, my question is: what is the 90th term of the sequence?


  Posted by Paul on 2005-08-06 01:01:27
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