Question 65
In the puzzle below, $a, b, c, d$, and $e$ are nonzero digits such that the two calculations are correct. The digits need not be distinct.
How many solutions are there for which $a \lt b$?
$ab \times ab = cde \quad \text{and} \quad ba \times ba = edc.$
A) 1 B) 2 C) 3 D) 4 E) 5
How many solutions are there for which $a \lt b$?
$ab \times ab = cde \quad \text{and} \quad ba \times ba = edc.$
A) 1 B) 2 C) 3 D) 4 E) 5