The sum of all 4 digit number containing the digits 2, 4, 6, 8, without repetitions is
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single digit no formed = 2,4,6,8
sum= 2+4+6+8= 20
two digit= 24,26,28,42,46,48,62,64,68,82,84,86
sum= 660
three digit no=246+264+426+462+624+642=2664
268+286+628+682+826+862=3552
248+284+428+482+824+842=3108
468+486+648+684+846+864=3996
sum of all 3 digit nos =13310
Similarly for all 4 digit numbers.
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