Question 86055
Question:


find the value of 
log 20


Answer:


find the value of 
log 20



Answer is 1.3010

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The whole number part of a logarithm and the decimal part have been given separate names.

The whole number part of a logarithm is called the CHARACTERISTIC.


The decimal part of a logarithm is called the MANTISSA.



For example, log 5270 = 3.72181; the mantissa is 0.72181 and the characteristic is 3.


Here you have to find out the value of log 20


Here the given number is 20, which is a whole number.

Its a two digit number.


Its charecterisitc is 2-1 (that is number of digits minus one)


So charecteristic is 1


Now for mantissa, with the help of logarithm table you can find out the value 
mantissa  = 0.3010



So the value of log20 = 1.3010



Hope you found the explanation useful



Regards.



Praseena