Question

Find the absolute value of 1 and - 1

Answer 1

if you mean |1+-1| the answer is zero, but if you mean |1| |-1| those are each one.

Answer 2

The absolute value of BOTH of those numbers is ' 1 '.

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Oh ! Wait just a second. Did you mean for the 1 and the -1 to be combined
in some way ? If that's what you had in mind, then you'll have to be more
specific. "And" is no mathematical operation that I know of.