যদি ax=b,by=c এবং cz=a হয় তবে xyz এর মান কত হবে?

A 2
B 1
C -2
D -1

Correct Answer: 1

ax = b = > (cz)x = b = > cxz = b = > (by)xz = b = > bxyz = b1 = > xyz = 1
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