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Is it true that the standard form of 12000000000 is 1.2 $\times$ 1010?

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False

True

answer is A.

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Detailed Solution

We have been given,
12000000000
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 be

a .

Therefore, our statement is true.
Hence, option 1 is correct.

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