hi buddies!!
plzz help
the answer to this question is 10 but I think it should be 9 since v hv to exclude one at the start plzz explain y I am wrong
m having my test tmrw
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To find when will they ring, we need to find the LCM of 8,12,15,18
8 = 2³
12 = 2² × 3
15 = 5 × 3
18 = 3² × 2
LCM = 2³ × 3² × 5 = 360
They will ring after 360s
=> 6 mins
sabrinanandini2:
sorry
ok now?? check now and press thanks
already thanked
actually I wanted to ask y 10 times
since it is written in the question that v have to exclude the 1st one
it should be 9
I know that I m wrong but pls clear my doubt
I promise to follow u
....if u clear my doubt
The first time it rang, then, our time starts
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