Two alarm clocks ring their alaram at regular intervals of 50 second and 48 second resp if first beep together at 12 noon at wat time they will beep together
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They will beep together after any interval which is multiple of both I.e. 50 and 48
We have to find the lcm of 48 and 50
48= 2×2×2×2×3
50= 2×5×5
Lcm of 50 and 48 = 2×2×2×2×2×5×5 = 1200
So the bell will ring after 1200 secs = 20 mins
Time= 12:20 Pm
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