যদি \({\rm{a}}\,{\rm{ + }}\,\frac{{\rm{1}}}{{\rm{b}}}\, = \,1\) এবং \({\rm{b}}\,{\rm{ + }}\,\frac{{\rm{1}}}{{\rm{c}}}\, = \,1\) হয়, তাহলে  \({\rm{c}}\,{\rm{ + }}\,\frac{{\rm{1}}}{{\rm{a}}}\) এর মান নির্ণয় করুন।

1
-1
2
1
3
b
4
-b

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