Question

please answer the question.

Answer 1

$1.6 \times 10 {}^{17} + 3 \times 10 {}^{16} \\ = 16 \times 10 {}^{16} + 3 \times 10 {}^{16} \\ = 19 \times 10 {}^{16} \\ = 1.9 \times 10 {}^{17}$

Answer 2

option B is the right answer
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