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Numbers whose base-10 representation has the same number of 0's and 5's.
0

%I #12 Nov 05 2021 15:32:04

%S 1,2,3,4,6,7,8,9,11,12,13,14,16,17,18,19,21,22,23,24,26,27,28,29,31,

%T 32,33,34,36,37,38,39,41,42,43,44,46,47,48,49,50,61,62,63,64,66,67,68,

%U 69,71,72,73,74,76,77,78,79,81,82,83,84,86,87,88,89,91,92,93,94,96

%N Numbers whose base-10 representation has the same number of 0's and 5's.

%t Select[Range[100],DigitCount[#,10,0]==DigitCount[#,10,5]&] (* _Harvey P. Dale_, Nov 05 2021 *)

%K nonn,base,easy

%O 1,2

%A _Olivier GĂ©rard_