1 × 8 + 1 =9
12 × 8 + 2 =98
123 × 8 + 3 =987
1234 × 8 + 4 =9876
12345 × 8 + 5 =98765
123456 × 8 + 6 =987654
1234567 × 8 + 7 =9876543
12345678 × 8 + 8 =98765432
123456789 × 8 + 9 =987654321
是不是很神奇!!!!!!!!!!!!
12 × 8 + 2 =98
123 × 8 + 3 =987
1234 × 8 + 4 =9876
12345 × 8 + 5 =98765
123456 × 8 + 6 =987654
1234567 × 8 + 7 =9876543
12345678 × 8 + 8 =98765432
123456789 × 8 + 9 =987654321
是不是很神奇!!!!!!!!!!!!