Chris, there may be something I am missing, but it seems that the solutions in the test suite are only including every second correct value. e.g. I get 10 results for problem 1. I think it is clear that something is wrong because problems 1 and 2 don't contain any of the same numbers (they each contain the alternate ones of the full set for values less than 100), and none of the lists contain the number 1.
Oh, and BTW, the example of the number 35, which is given in the problem description, does not appear in the list for the solution of the first problem.
William, I don't consider 1 as a prime or composite number, and I've added that note to the problem. Also, rather than list all of the numbers, the test suite checks some of them. For example, the first problem has y(1:2:end), and the second has y(2:2:end). I haven't looked at your solutions, but I suspect the problem is including 1; there are nine numbers less than or equal to 100, not ten.
Thanks. I missed the fact that you were only checking alternate values. It's a clever problem!
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