The product of a non-zero rational number and its reciprocal is always 1. Explanation:- the reciprocal of a number is 1 divided by that number. When you multiply a number by its reciprocal, the result is always 1. For example, the reciprocal of 2 is 1/2, and 2 * (1/2) = 1. Similarly, the reciprocal of -5 is -1/5, and (-5) * (-1/5) = 1.