1.

The set of all the solution of the equation log_(5)x log_(6)x log_(7)x = log_(5)x. log_(6)x + log_(6)x. log_(7)x + log_(7)x. log_(5)x is

Answer»

(0,1)
(1,210)
(1,5,6,7,210)
NONE of these

ANSWER :B


Discussion

No Comment Found