Page 34 - Numbertheory

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.1993 + 742 ()

. 993 1993

993 = 992 × 9 = (92 )46 × 9 .1 92 = 81

. 1×9 = 9 993

74 = 72 × 72 . 9 72 = 49

742 = (74 )10 × 72 .1 9×9 = 81

. 9 1×9 = 9 742

. 8 9 + 9 = 18 1993 + 742

()

0,1, 2, 3, 4, 5, 6, 7, 8, 9

52 = 25 42 = 16 32 = 9 22 = 4 12 = 1 02 = 0
65410
. 92 = 81 82 = 64 72 = 49 62 = 36
8732
.9

.

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