If two positive integer a and b are written as a=x3 y2 and b =xy3;x,y

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If two positive integer a and b are written as a=x3 y2 and b =xy3;x,y are prime number, then HCF(a,b)is (a) a3 b3 (b) a3 b2 (c) a2 b2 (d) ab