Question

Write an expression that shows the multiplication of a two digit number between 1 and 10 and a three digit number between 1 and 10, whose product is greater than 4, but less than 6.

Answer 1

`a,\ b,\ c,\ d,\ e\in\{1,\ 2,\ 3,\ 4,\ 5,\ 6,\ 7,\ 8,\ 9\}\\\\4 < (a+0.1b)(c+0.1d+0.01e) < 6`