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JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

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If x=∑n=0∞an,y=∑n=0∞bn,z=∑n=0∞(ab)nx=\sum\limits_{n=0}^{\infty} a^n, y=\sum\limits_{n=0}^{\infty} b^n, z=\sum\limits_{n=0}^{\infty}(a b)^n, where a,b<1a, b<1, then
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Correct option: B
xz+yz=xy+zx z+y z=x y+z
Option B (xz+yz=xy+zx z+y z=x y+z) is correct because it is derived from the relationships between x, y, and z, which are sums of infinite geometric series involving a and b.

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