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樓主 |
發表於 2014年11月20日 01:35 AM
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顯示全部樓層
5 x 3 = 15, 5 x 2 = 10, 15 + 10 – 3 = 22; ----> 151022
9 x 2 = 18, 9 x 4 = 36, 18 + 36 – 2 = 52; ----> 183652
8 x 6 = 48, 8 x 3 = 24, 48 + 24 – 6 = 66; ----> 482466
5 x 4 = 20, 5 x 5 = 25, 20 + 25 - 4 = 41; ----> 202541
So,
7 x 2 = 14, 7 x 5 = 35, 14 + 35 – 9 = 40; ----> 143540  |
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