question_answer 33)

                  The sum of number 436.32, 227.2 and 0.301 in appropriate significant figure is                     (a) 663.821                          (b) 664                 (c) 663.8                               (d) 663.82                

Answer:

                  (b)                          \[\frac{\begin{align}   & 436.32 \\  & +227.2 \\  & +0.301 \\ \end{align}}{663.821}=644\]                       (After rounding off of have appropriate significant figures (3) in final result)