The number 720 is special: it is 8*9*10 the product of three successive non-negative integers. The first few special numbers are
*/"1 [ 0 1 2 +"1 0 i. 10
0 6 24 60 120 210 336 504 720 990
Write a verb test that tests whether a non-negative integer is special:
test 720
1
test 0
1
test 721
0
--Kip Murray
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