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Sat 9 Oct, 2004 09:03 pm
Find the missing number in the series, and explain.
10 11 12 13 15 16 17 20 22 24 ..... 100 121 1000
I think you left out a number. Are you sure it isn't:
10 11 12 13 14 15 16 17 20 22 24 ? 100 121 1000
If so, the answer is 31.
The sequence is the number 16 represented in bases 16 through 2.
Markr ..
Yes, you are correct, twice. I indeed did leave out a number, and the missing number is 31.