• # question_answer Find the value of $2ab+c,$when a=1, b=2 and $c=-\text{ }1$ A) 0                                 B) $-1$C) 2                                 D) 3

Given,    a=1, b=2 and $c=-1$ Then, $2a-b+c=2~\times 12+\left( -1 \right)$ $=22-1$ $=-1$