3 ms·Only 20% of 2 digit numbers are product of one digit numbers: 10 (1+9), 11, 12, 13 … 18 (9+9)by avp210 4mo agoOnly 20% of 2 digit numbers are product of one digit numbers: 10 (1+9), 11, 12, 13 … 18 (9+9)