Question

7log125×8log49×25log32=

Answer 1

^7log125 x ^8log49 x ^25log32
= ^7log5^3 x ^5^2log2^5 x ^2^3log7^2
= 3 ^7log5 x 5/2 ^5log2 x 2/3 ^2log7
= 3 x 5/2 x 2/3 x ^7log5 x ^5log2 x ^2log 7
= 5 ^7log7
= 5 x 1
= 5