Question

(1) What is the value of the expression below?

Answer 1

$\frac{12.5 \times {10}^{21} }{2 \times {10}^{3} }$
$12.5 \times {10}^{18} \times {2}^{ - 1}$
2^-1 = 1/2
$\frac{12.5 \times {10}^{18} }{2}$
$6.25 \times {10}^{18}$