The total number of Natural numbers that lie between 10 and 300 and are divisible by 9 is
The first natural number between 10 and 300 which is divisible by 9 is 18
The last natural number which is divisible by 9 and is less than 300 is 297
This is an AP with first term 18, the last term 297 and common difference = 9
297=18+(n-1)9
279=(n-1)9
n-1 = 31
n=32
A is the correct answer.
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