max[x*y | x and y belong to {0,1,2,3,4,5,6,7,8,9}]
9 x 9 = 81
That number is infinite. There is no number so large that it cannot be multiplied by 11.
2 digit number
Six.
The multiplier. The multiplicand is multiplied by the multiplier to create the product.
Since the greatest digit is 9 and the greatest 2-digit number is 99, the product of them is 891.
1
0
13
product
The product
Multiplier. Multiplicand times multiplier equals product.