|
9 × 2 = 18 → ( 1 + 8 ) = 9
9 × 3 = 27 → ( 2 + 7 ) = 9
9 × 4 = 36 → ( 3 + 6 ) = 9
9 × 5 = 45 → ( 4 + 5 ) = 9
9 × 6 = 54 → ( 5 + 4 ) = 9
9 × 7 = 63 → ( 6 + 3 ) = 9
9 × 8 = 72 → ( 7 + 2 ) = 9
9 × 9 = 81 → ( 8 + 1 ) = 9
9 × 10 = 90 → ( 9 + 0 ) = 9
9 × 11 = 99 → ( 9 + 9 ) = 18
( 1 + 8) = 9
9 × 12 = 108 → ( 1+0+8 ) = 9
:
:
::
9 × 25 = 225 → ( 2+2+5 ) = 9
9 × 26 = 234 → ( 2+3+4 ) = 9
::
: : |
9 × 9 + 7 = 88
98 × 9 + 6 = 888
987 × 9 + 5 = 8888
9876 × 9 + 4 = 88888
98765 × 9 + 3 = 888888
987654 × 9 + 2 = 8888888
9876543 × 9 + 1 = 88888888
9 × 9 = 81
99 × 99 = 9801
999 × 999 = 998001
9999 × 9999 = 99980001
99999 × 99999 = 9999800001
999999 × 999999 = 999998000001
9999999 × 9999999 = 99999980000001 |
