If a, b, c are in A. P. and x, y, z are in G. P., then the value ofxb

1.	If a, b, c are in A. P. and x, y, z are in G. P., then the value ofxb - c yc - a za - b is
A.	0
B.	1
C.	2
D.	-1
Answer» C. 2

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If a, b, c are in A. P. and x, y, z are in G. P., then the value ofxb - c yc - a za - b is

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