Question

scrie toate nr. de doua cifre care au suma cifrei unitatilor si a zecilor10; 9; 6; 7;

Answer 1

cu 10: 19, 28, 37, 46, 55, 64, 73, 82, 91
cu9: 18, 27, 36, 45, 54, 63, 72,81, 90
cu 6: 15, 24, 33, 42, 51, 60
cu 7: 16, 25, 34, 43, 52, 61, 70

Answer 2

55,64,46,91,19,28,82,37,73(10)
54,45,90,18,81,27,72,36,63(9)
33,15,51,60,24,42(6)
16,61,70,52,25,34,43(7)
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