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Question

11+x(ba)+x(ca).11+x(ab)+x(cb).11+x(bc)+x(ac)=?


A

0

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B

1

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C

x a – b – c

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D

xabc

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Solution

The correct option is B

1


Given exp=1(1+xbxa+xcxa)+1(1+xaxb+xcxb)+1(1+xbxc+xaxc)=xa(xa+xb+xc)+xb(xa+xb+xc)+xc(xa+xb+xc)=(xa+xb+xc)(xa+xb+xc)=1.


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