Question

3log 7 x 25log 32 x 49log 81

Answer 1

^3log7 × ^25log32 × ^49log81
=^3log7×^5²log2^5×^7²log3⁴
=^3log7×5/2ײlog2×4/2×^7log3
= 5/2 × 4/2 × 1× ^3log7×^7log3
= 5/2 × 2 × 1 × 1
= 5