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     EduGorilla 
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    If a,b,c are  non – zero real numbers and if the equations (a-1) x = y + z, (b -1)y = z + x, (c – 1)z = x + y has a non trivial solution, then ab + bc + ca is equal to

    Options :-

    1. a +b + c

    2. abc

    3. 1
    4. None of these


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Reply To: If a,b,c are  non – zero real numbers and if the equations (a-1) x = y + z, (b -1)y = z + x, ….
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