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What is standard form of number $384000000 m$ ?

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None of the above

384000000 m

1.2756

\times

107

3.84

\times

108

answer is B.

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Detailed Solution

We have been given,
384000000m
If the decimal point is moved

n

places to the left indicate that the number is multiplied by

10 n .

If the decimal point is moved

n

places to the right indicate that the number is multiplied by

10 − n .

Let the standard form of

384000000 m

a .

Therefore, the standard form of the number is

3.84 × 108 .

Hence, option 2 is correct.

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