1
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
If $$A = \left[ {\matrix{ 2 & { - 0.1} \cr 0 & 3 \cr } } \right]$$ and $${A^{ - 1}} = \left[ {\matrix{ {{\raise0.5ex\hbox{$\scriptstyle 1$} \kern-0.1em/\kern-0.15em \lower0.25ex\hbox{$\scriptstyle 2$}}} & a \cr 0 & b \cr } } \right]$$ then $$a+b=$$
A
$${7 \over {20}}$$
B
$${3 \over {20}}$$
C
$${19 \over {60}}$$
D
$${11 \over {20}}$$
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