\( \Lambda \) solution of the equation \( \cot ^{-1} 2=\cot ^{-1} x...
\( \Lambda \) solution of the equation \( \cot ^{-1} 2=\cot ^{-1} x+\cot ^{-1}(10-x) \) where \( 1x9 \) is :
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(a) 7
(b) 3
(c) 2
(d) 5
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0