Question 6
A special operation satisfies 2∗6=26−2−6=18 and 3∗7=37−3−7=27. For non-zero digits a and b, a∗b=36. What is a? Here ab means the two-digit number with tens digit a and units digit b.
Extend the demonstrated rule as a∗b=ab−a−b, with ab a two-digit numeral, not a product.
Extend the demonstrated rule as a∗b=ab−a−b, with ab a two-digit numeral, not a product.