Question

The multiplicative inverse of $a^m$ is ___ .

• A. 10000000
• B. 0.000000001
• C. 0.0000000001
• D. 10000000000

Answer 1

The correct option is C

0.0000000001

Multiplicative inverse of a number $x$ is a number $x^{-1}$ such that $x\times x^{-1}=1$
For any number of the form $a^m$, its multiplicative inverse is the number $a^{-m}$.
$a^m\times a^{-m}=a^{m-m}=a^0=1$, where $a\ne 0$