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CBSE Class 12-science Answered

if aN={ax:x belongs to N},and bN union cN =dN ,where b,c belongs to N are relatively prime then
Asked by TARUN Garg | 03 May, 2013, 06:13: PM
answered-by-expert Expert Answer
Please note that the question is not correct. It should be bN intersection cN =dN and not bN union cN =dN. The solution then would be
 
bN = the set of positive integral multiples of b, cN = the set of positive integral multiplies of c.
Hence, bN intersection cN = the set of positive integral multiples of bc (as b,c are prime)
and this bN intersection cN = dN, hence  d = bc .
Answered by | 04 May, 2013, 03:38: AM
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