油漆工程

有趣的數字（一）（一）1 × 8 + 1 = 912 × 8 + 2 = 98123 × 8 + 3 = 9871234 × 8 + 4 = 987612345 × 8 + 5 = 98765123456 × 8 + 6 = 9876541234567 × 8 + 7 = 987654312345678 × 8 + 8 = 98765432123456789 × 8 + 9 = 987654321（二）0 × 9 + 1 = 11 × 9 + 2 = 1112 × 9 + 3 = 111123 × 9 + 4 = 11111234 × 9 + 5 = 1111112345 × 9 + 6 = 111111123456 × 9 + 7 = 11111111234567 × 9 + 8 = 1111111112345678 × 9 + 9 = 111111111123456789 × 9 + 10 = 1111111111（三）9 × 9 + 7 = 8898 × 9 + 6 = 888987 × 9 + 5 = 88889876 × 9 + 4 = 8888898765 × 9 + 3 = 888888987654 × 9 + 2 = 88888889876543 × 9 + 1 = 8888888898765432 × 9 + 0 = 888888888（四）1 × 1 = 111 × 11 = 121111 × 111 = 123211111 × 1111 = 123432111111 × 11111 = 123454321111111 × 111111 = 123456543211111111 × 1111111 = 123456765432111111111 × 11111111 = 123456787654321111111111 × 111111111 = 12345678987654321（五）37 × 3 = 11137 × 6 = 22237 × 9 = 33337 × 12 = 44437 × 15 = 55537 × 18 = 66637 × 21 = 77737 × 24 = 88837 × 27 = 999.