1. Since 7 divides both 28 and 63, the linear combination property states that 7 must also divide their sum. Their sum is ___.
2. The number 8 divides both 32 and 56. According to the property of linear combinations, which of the following numbers must also be divisible by 8?
3. If a number $k$ divides both integers $x$ and $y$, which of the following expressions is NOT guaranteed to be divisible by $k$ based on the property of linear combinations?
4. We know that 4 divides both 16 and 28. The property of divisors states that 4 must also divide the difference $16 - 28$, which is ___.
5. It is known that 11 divides both 33 and 121. Which statement is a direct consequence of the linear combination property of divisors?
6. If 7 divides 21 and 21 divides 63, which conclusion is guaranteed by the transitivity property of divisors?
7. We know that 4 is a divisor of 20, and 20 is a divisor of 80. By the transitivity property, it must be true that 4 is a divisor of ___.
8. Which statement correctly demonstrates the transitivity property of divisors?
9. Let $m$, $n$, and $p$ be integers. If $m \mid n$ and $n \mid p$, then the transitivity property implies that $m \mid$ ___.
10. Given that $2 \mid 10$ and $10 \mid 50$, a student concludes that $2 \mid 50$. Is this conclusion a correct application of the transitivity property?