A) 11 : 00 a.m.
B) 10 : 00 a.m.
C) 12 : 00 noon
D) 11 : 30 a.m.
Correct Answer: A
Solution :
L.C.M. of 4, 8, 12 and 15 L.C.M. \[=2\times 2\times 2\times 3\times 5=120\] Thus, four planes take off together again after 120 minute i.e. after 2 hour. i.e. 11 a.m.You need to login to perform this action.
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