Multiply 11.28 with 12.43 and express the product obtained in six significant figures.

140.21

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140.211

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134.21

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None of these

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Solution

The correct option is A 140.21
11.28 $\times$ 12.43 = 140.2104
It is in four significant figures, we were asked to obtain three significant figures.
So, we omitted the last number that is 4, as it is less than 5 it remains same.
Hence, the correct answer is 140.210.

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