Position of first significant figure for .6910815

Give the position of the first significant figure in the number whose logarithm is $.6910815$ .

~2 minProof · checked by AIlogarithmscharacteristicsignificant figures

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. XVI. Logarithms, Examples XVI.b, No. 4 (part 2)

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