82.) If positive integer x is a multiple of 6 and positive integer y is a multiple of 14, is xy a multiple of 105?
1) x is a multiple of 9
2) y is a multiple of 25
Guys i tried this question twice my answer C but OA is different
as x is multiple of 6 x has minimum two factors 2,3 maximum can be any
as y is multiple of 14 y has minimum two factors 7,2 maximum can be any
Is xy multiple of 105 or is xy has minimum 5,3,7...
1) x is multiple of 9
so xy must have 2,3,3,3 ,7,2
but we need 5 also --------NS
2) y is multiple of 25
so xy must have 2,3,7,2,5,5
OK guys i got B. which is OA
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