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If M and N are two positive integers such that 7 times M is 9 times N and 1260 is the least number that is a multiple of both M and N, then which among the following is the greatest number that can divide both M and N ?
(a) 20
(b) 30
(c) 40
(d) 50
(e) 60
OA A
Source: e-GMAT
(a) 20
(b) 30
(c) 40
(d) 50
(e) 60
OA A
Source: e-GMAT
