Question

If mantissa of logarithm of 719.3 to the base 10 is 0.8569 , then mantissa of logarithm of 71.93 is

• A. 0.8569
• B. $\overline{1}.8569$
• C. 1.8569
• D. 0.1431

Answer 1

The correct option is A 0.8569

Mantissa of logarithm of $719.3$ to base $10$ is $0.8569$

Then, mantissa of logarithm of $71.93$ is also $0.8569$

As, ${\log }_{10}\left(719.3\right)=2+\left(0.8569\right)$(mantissa)

So, ${\log }_{10}\left(71.93\right)=1+\left(0.8596\right)$ (mantissa)