9. In a container, there are two types of bacteria, A and B. At any time, the product of the number of bacteria A and B is a constant $10 ^ { 10 }$. For simplicity, scientists use $P _ { A } = \log \left( n _ { A } \right)$ to record data about the number of bacteria A, where $n _ { A }$ is the number of bacteria A. Which of the following statements are correct? (1) $1 \leq P _ { A } \leq 10$ (2) When $P _ { A } = 5$, the number of bacteria B equals the number of bacteria A (3) If $P _ { A }$ measured last Monday was 4 and $P _ { A }$ measured last Friday was 8, then the number of bacteria A on Friday is twice the number on Monday (4) If today's $P _ { A }$ value increases by 1 compared to yesterday, then today's bacteria A count is 10 more than yesterday's (5) If the scientist controls the number of bacteria B to be 50,000, then $5 < P _ { A } < 5.5$
& 25 & & 21 & 2 & & 37 & 3
9. In a container, there are two types of bacteria, A and B. At any time, the product of the number of bacteria A and B is a constant $10 ^ { 10 }$. For simplicity, scientists use $P _ { A } = \log \left( n _ { A } \right)$ to record data about the number of bacteria A, where $n _ { A }$ is the number of bacteria A. Which of the following statements are correct?\\
(1) $1 \leq P _ { A } \leq 10$\\
(2) When $P _ { A } = 5$, the number of bacteria B equals the number of bacteria A\\
(3) If $P _ { A }$ measured last Monday was 4 and $P _ { A }$ measured last Friday was 8, then the number of bacteria A on Friday is twice the number on Monday\\
(4) If today's $P _ { A }$ value increases by 1 compared to yesterday, then today's bacteria A count is 10 more than yesterday's\\
(5) If the scientist controls the number of bacteria B to be 50,000, then $5 < P _ { A } < 5.5$