1.Monica, Veronica and Rachat begin to jog around a circular stadium. They complete their revolutions in 42 s, 56 s and 63 s, respectively. After how many seconds will they be together at the starting point?
(a) 366
(b) 252
(c) 504
(d) Couldn’t be determined
(e) None of the above
2.Find the side of the largest possible square slabs which can be paved on the floor of a room 2m
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