Question
Three streetlights flash together. Each of them then
flashes after 0.35 seconds, 0.2 seconds, and 0.105 seconds respectively. After how many seconds will they all flash together again?Solution
0.35,  0.2,   0.105 multiplied by 0.001. 350,200,105 LCM of 350,200,105=4200 4200 × 0.001=4.2 =4.2
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