Question 134
By replacing each * in the expression $1 * 2 * 3 * 4 * 5 * \cdots * 2019 * 2020$ by a $+$ or a $-$ sign, we get a long calculation. Put the $+$ and $-$ signs in such a way that the outcome is a positive number (greater than $0$) which is as small as possible.
What is this outcome?
What is this outcome?