(a)[1]
For $120 = 2^m \times 3 \times 5$, find $m$.
(b)[3]
Find the time at which they next change to red together.
Mathematics 0580 · IGCSE · Indices I
For $120 = 2^m \times 3 \times 5$, find $m$.
Find the time at which they next change to red together.