Question

The largest $$8$$ digit number is
A.$$888999$$
B.$$99999999$$
C.$$999999$$
D.$$8999999$$

Answer 1

Hint: In the given problem, we have to find out from the four given options which one is the largest $$8$$-digit number. We will find it or check it by taking all the four options one after another and hence, we will get the largest $$8$$-digit number.

Complete step-by-step answer:
The given question is about writing the largest eight-digit number.
First of all, the largest number is the number which is larger than all others. No another number is greater than that number. $$8$$-digit number is the number containing a total of eight digits. Now, we will check each given option one after another.
In the first option, we are given $$888999$$ and we have to check that this is the largest $$8$$-digit number or not. Since, $$888999$$ contains $$6$$-digit but we want $$8$$- digit largest number.
Therefore, option (A) is wrong.
In the second option, we are given $$99999999$$ and we have to check that this is the largest $$8$$-digit number or not. Since $$99999999$$ contains $$8$$-digits and also, this is the largest $$8$$-digit number. If we add $$1$$ in $$99999999$$, we get $$100000000$$ which will become $$9$$-digit number.
Therefore, option (B) is correct.
In the third option, we are given $$999999$$, which is $$6$$-digit number and hence, the third option is also incorrect.
In the last option, we are given $$8999999$$. Since, this number contains $$7$$-digits. Therefore, this option is also incorrect. This is not the largest $$8$$-digit number.
Therefore, option (B), $$99999999$$ is the largest $$8$$-digit number.

Note: If we want to write the smallest $$8$$-digit number, it would contain $$8$$ digits which are $$10000000$$. If we check this, subtract $$1$$ from $$10000000$$, we get $$9999999$$, which is $$7$$-digit number. Hence, $$10000000$$ is the smallest $$8$$-digit number. To check the greatest number, add $$1$$ to it and to check the smallest number, subtract $$1$$ from it, then check that the number of digits remains the same.