if log 5 = 0.69897, the number of digits in 5128 is
Choose the correct choice from the following answers.
A) 90  B) 39  C) 88  D) 28  E) 11
Explanation:   log(5128) = 128log(5) = 128 × 0.69897 ≈ 89.46   ie, its characteristic = 89   Hence, number of digits in 2128 = 89+1= 
<gadget id="calculator">89+1</gadget>
<output>90</output>
90   90nswer: Option 90
<result>A</result>
if log 5 = 0.69897, the number of digits in 5128 is