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Write the significant digits in each of the following numbers to compute the mantissa of their logarithms: 3.239 (ii) 8 (iii) 0.9 (iv) 0.02 0.0367 (vi) 89 (vii) 0.0003 (viii) 0.00075

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`{:("Number",,"Significant digits"),(3.239,," "3239),(8,," "80),(0.9,," "90),(0.02,," "20),(0.0367,," "367),(89,," "89),(0.0003,," "30),(0.00075,," "75):}`
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