Below are 2 different sequences, but the rules are the same,
2, 3, 3, 9, 9, ?
3, 7, 3, 3, 7, 9, ?
determine the two missing numbers and find the rule,
Bonus. how far can each sequence go? Can you find a longer sequence of numbers that follow the same rule?
The first sequence missing number is 3.
The second sequence missing number is 9.
The first sequence cannot be extended any further.
The second sequence can be extended to length 8: 37337999
Assuming that the first number has to be a single digit, the longest sequence that I could find was 8. I found three of those, including the first. The other two are: 59393339 and 73939133.
Anyone else want to tackle the problem if we don't have to have a single digit to start?
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Posted by SteveH
on 2004-12-17 19:04:05 |
All three parts
