If (1/a) × (1/b) = 1, what is the value of b - ac, where c is an unknown constant?
Q1. If (1/a) × (1/b) = 1, what is the value of b - ac, where c is an unknown constant?
Answer: Cannot be determined
Explanation: The condition (1/a)(1/b)=1 means b=1/a, but c is unknown, so b − ac cannot be evaluated to a single value.