Question 1123792

if you need only one even {{{number}}} less than {12}, it is {10}

 the subset: {} and {10}

if you need ALL even {{{numberS}}} less than {12}, you have:

{2,4,6,8,10}

then subsets are:

{} | {2} | {4} | {6} | {8} | {10} | {2, 4} | {2, 6} | {2, 8} | {2, 10} | {4, 6} | {4, 8} | {4, 10} | {6, 8} | {6, 10} | {8, 10} | {2, 4, 6} | {2, 4, 8} | {2, 4, 10} | {2, 6, 8} | {2, 6, 10} | {2, 8, 10} | {4, 6, 8} | {4, 6, 10} | {4, 8, 10} | {6, 8, 10} | {2, 4, 6, 8} | {2, 4, 6, 10} | {2, 4, 8, 10} | {2, 6, 8, 10} | {4, 6, 8, 10} | {2, 4, 6, 8, 10} (total: 32)