Question 11
Exercise 15. The LCM of three numbers $P,Q$ and $R$ is $2^5\times3^6\times5^2\times7^2$. Given that $P=2^4\times3^5\times7^2$ and $Q=2^5\times3^2\times5\times7$. Find the smallest value of $R$, in index notation.
**Editorial input convention:** Use index notation with ^ for exponents and * or × for multiplication; example format only: 2^3*7^2.
**Editorial input convention:** Use index notation with ^ for exponents and * or × for multiplication; example format only: 2^3*7^2.