Think about place value of last digit i.e 3.
Next number after the biggest 7 digit number i.e 99,99,999
How would you write this number as sum of each digit's value.
Check if in the number any digit is written twice.
Think how many digits are there in one crore?
Which of these number is more?
Start by working out the place value of the left most digit of the number.
A number to which when you add one you get the smallest 9Â digit number i.e 10,00,00,000
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