Jambmaths question:
Evaluate $\frac{{{5}^{-3}}\times {{5}^{-4}}}{{{5}^{-6}}\times {{5}^{-2}}}$
Option A:
5
Option B:
25
Option C:
–7
Option D:
–8
Jamb Maths Solution:
$\frac{{{5}^{-3}}\times {{5}^{-4}}}{{{5}^{-6}}\times {{5}^{-2}}}=\frac{{{5}^{-3-4}}}{{{5}^{-6-2}}}=\frac{{{5}^{-7}}}{{{5}^{-8}}}={{5}^{-7-(-8)}}={{5}^{1}}=5$
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