A) 12 midnight
B) 3a.m.
C) 6a.m.
D) 9a.m.
Correct Answer: D
Solution :
L.C.M. \[(30,\,\,60,\,\,90,\,105)={{2}^{2}}\times {{3}^{2}}\times 5\times 7\]' = 1260 mins = 21 hoursYou need to login to perform this action.
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