Question

29. If log2 logz loga x = 1, then the value of x is (b) 49 (c) 49 (d) none of these

JEE/Engineering Exams

Maths

Solution

129

4.0 (1 ratings)

( log _{2} log _{3} log _{7} x=1 ) ( log _{3} log _{4} x=2 ) ( log _{3} log _{4} x=log _{3} 9 ) ( log _{4} x=9 ) ( log _{4} x=log _{4} 49 ) ( frac{x=4^{9}}{x}=(C) )