Dear student,

As per the given question the greatest four digit number is 9999 which is the b part / option b, 2,000 is not greater than 9999 and is therefore not the greatest four digit number, also the smallest four digit number is 1,000 .

Hope this helps.

The greatest 4 digit number is 9999. This is because after 9999, you will get the smallest 5 digit number which is 10000. There is a pattern in finding the greatest number because each greatest number starts with 9 in each series and I have mentioned below.:

• The greatest one digit number is 9
• The greatest two digit number is 99
• The greatest 3 digit number is 999
• The greatest 4 digit number is 9999
• The greatest 5 digit number is 99999
• The greatest 6 digit number is 999999
• The greatest 7 digit number is 9999999
• The greatest 8 digit number is 99999999

The same process will go with every series of greatest numbers.

Dear aspirant hope you are doing well.

The smallest 4 digit number is 1000 and the greatest 4 digit number is 9999.for more dought

You can comment on comment section below.

For further Query or help...

.

Hope it's helpful for you .

Thank you very much