If ${log}_{10} N = 2.5$ then find out total number of digits in N

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Solution

The correct option is A 3
${log}_{10} 10 = 1$ , no of digit $= 2$
${log}_{10} 100 = 2$ , no of digit $= 3$
${log}_{10} 1000 = 3$ , no of digit $= 4$
As we can see from the above ${log}_{10} 100 = 2$ has $3$ digit and ${log}_{10} 1000 = 3$ has $4$ digit.
In question it is given that ${log}_{10} N = 2.5$ , that means it has a value which is greater than ${log}_{10} 100 = 2$ and less than ${log}_{10} 1000 = 3$ , so it will consist of $3$ digits.

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If log10N=2.5 then find out total number of digits in N

If ${log}_{10} N = 2.5$ then find out total number of digits in N