defence exam BSF Constable (Tradesmen) 2023 Mock Test Quantitative Aptitude Simplification Surds and Indices
If \({\left( {\frac{2}{7}} \right)^{ - 3}}\times{\left( {\frac{4}{{49}}} \right)^6} = {\left( {\frac{2}{7}} \right)^{2m - 1}}\), then what is the value of m?
1
4
2
5
3
-4
4
-5