If the number of distinct terms in expansion of (x+y+z+1xy+1yz+1zx)2 – InterviewSolution

1.	If the number of distinct terms in expansion of (x+y+z+1xy+1yz+1zx)2 and (x+y+z+1x+1y+1z)2 is m and n respectively, then the value of m+n is
Answer» If the number of distinct terms in expansion of ${(x + y + z + \frac{1}{x y} + \frac{1}{y z} + \frac{1}{z x})}^{2}$ and ${(x + y + z + \frac{1}{x} + \frac{1}{y} + \frac{1}{z})}^{2}$ is $m$ and $n$ respectively, then the value of $m + n$ is

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