The three words "GOD IS LOVE" are flashed such that the words individually are switched on at regular intervals of 4, 7 and 9 seconds respectively and after they are switched on, the words are switched off after 2 sec, 4 sec and 5 sec respectively. If at time 't' all the words happened to switch off simultaneously, find the least time 't' which all three words will switch on simultaneously.
a) 252 sec
b) 126 sec
c) 94 sec
d) 38 sec
Answers
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1
Answer:
252
Step-by-step explanation:
We will find the LCM because when there is least we will also find LCM of the numbers.
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