Question

el valor de
${7} - ^{3}$
a) -1/343
b) 1/343
c) -343
d) 343
​

Answer 1

${7}^{ - 3} = \frac{1}{ {7}^{ 3} } = \frac{1}{343} \\ \\ \bf\huge\green{b) \frac{1}{343} }$