If hcf (a, b) =15 and a ×b =1200 then find lcm (a, b)
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a*b=H.C.F. of a and b * L.C.M. of a and b
so
1200=15*L.C.M. of a and b
now
1200/15=L.C.M of a and b
so L.C.M. of a and b=80
so
1200=15*L.C.M. of a and b
now
1200/15=L.C.M of a and b
so L.C.M. of a and b=80
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