3 Answers
Correct option is (B) 2
\(5^{3x-1}\div25\) = 125
\(\Rightarrow\frac{5^{3x-1}}{25}=125\)
\(\Rightarrow\) \(5^{3x-1}=5^2\times5^3=5^{2+3}=5^5\)
\(\Rightarrow\) \(3x-1=5\)
\(\Rightarrow\) 3x = 5+1 = 6
\(\Rightarrow x=\frac63=2\)
4 views
Answered