Express $180$ as a product of prime factors.[1] Two signals flash together at 09 00. One flashes e

Question

Express $180$ as a product of prime factors.[1] Two signals flash together at 09 00. One flashes every 45 seconds and the other every 60 seconds. Find the next time when they flash together.[2]

Accepted Answer

(a) $2^2\times3^2\times5$ (b) 09 03

Repeating signals

Repeating signals

Solution:

Solution locked