Question

write an expression that is 1 when one or more variables ( A, B, C, D and E) are 0 s?

Answer 1

1+0+0+0+0
or
0+1+0+0+0
etc

Answer 2

Answer:If we multiply any number with 0 it will always be equals to 0.

Explanation:

Let a = 0

Then, a (b+c+d+e) = 0

as a = 0 and if we multiply any number with 0 it will always be equals to 0.