Eleven
1 + 1 = 2
1 x 1 = 1
It can have up to 5 digits.
81
You had me until "product." The product of 4 digits can't be prime.
121
-10
It can have up to 5 digits.
Six.
81
You had me until "product." The product of 4 digits can't be prime.
362x(3x6)
-109
They are the same because they are both multiplication. They also can be the same if the two digit number times by the one digit number equals a three digit number. They are different because the 3 digits number will obviously produce a higher product.
1
121
The number is 83.
-10
804