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Write $0.00000063$ in scientific notation?

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6.3 \times 10^{- 7}

63 \times 10^{10}

6.3 \times 10^{10}

63 \times 10^{7}

answer is A.

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Detailed Solution

Given: The number is

0.00000063

.
Now, let’s see after the decimal how many numbers are there.
We can see all total

8

digits (numbers) are there, so,
The number

63

after the zeros are eliminated as the starting zeros present in the number after removing the decimal is not required.
And, since the decimal is removed, the number

63

is multiplied by

10^{- 7}

(‘minus’ because the decimal is removed, so the power of

10

is in the denominator).

\Rightarrow 0.00000063 = \frac{63}{10^{8}}

= \frac{63}{10 \times 10^{7}}

= 6.3 \times 10^{- 7}

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