2. The product of five numbers is not equal to zero. Each of these numbers was decreased by one, yet their product remained unchanged. Provide an example of such numbers.
2. We can construct an example simply by taking the first four numbers equal to 2 (we cannot take ones - after subtraction, we would get zeros). Let the fifth number be $x$. For these numbers to satisfy the condition of the problem, it is sufficient that the equality $16 x=x-1$ holds, from which $x=-1 / 15$.