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How many significant digits are there in the number 9.15 x 104?

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Answer:

There are three significant digits in the number 9.15 x 104. The significant digits are 9, 1, and 5. The exponent 4, indicates that the number has been multiplied by 10 four times, which indicates the place value of the number. The exponent does not affect the number of significant digits in the original number, which is 3 in this case.

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