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Question

Evaluate 25.2×137433.3. All the digits in this expression are significant.


A

1039

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B

1039.784

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C

1040

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D

104

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Solution

The correct option is C

1040


We have 25.2×137433.3= 1039.7838....

Out of the three numbers given in the expression 25.2 and 33.3 have 3 significant digits and 1374 has four. The answer should have three significant digits. Rounding 1039.7838... to three significant digits, It becomes 1040. Thus, we write

25.2×137433.3 = 1040.


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