Assume three strings of different lengths \( 78 \mathrm{~cm}, 117 \mathrm{~cm} \) and 351 cm cut into equal lengths. Find the greatest possible length of each piece.

Which of the following are rational numbers? Select all correct answers. Select all that apply: \( 0.7171171117 \ldots \) \( 0.0505505550 \ldots \) \( 0.6262626262 \ldots \) 4.8 \( \square \sqrt{13} \) \( \square \) \( \square \)

2. Max made 39 snowballs. Lucy made 35 more snowballs than Max. How many snowballs do Max and Lucy have altogether?

\begin{tabular}{l}\( 18 \times 6=6 \times 18 \) \\ \hline Select the correct answer below: \\ \hline Associative \\ \hline Commutative \\ Inverse \\ Identity \\ Distributive \\ \hline\end{tabular}

What is the greatest common factor for the numbers 24, 36, and 60?

4. The population of a city is 67,721 and the neighboring city has a population of 52,103 . The difference between two cities is