Final answer:
The number in the list that cannot be paired to make an integer product is √60.
Step-by-step explanation:
The question asks us to identify the number in the list that cannot be paired with a different number on the same list to make an integer product. We can identify this by looking for any number that has a fractional power, as multiplying it by itself would not result in an integer. In this case, the number that satisfies this condition is √60 (option C), as its square root is not an integer.