How many numbers are there in the list 1, 2, 3, 4, 5, …, 10 000 which
contain exactly two consecutive 9’s such as 993, 1992 and 9929 but NOT
9295 or 1999?
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How many numbers are there in the list 1, 2, 3, 4, 5, …, 10 000 which
contain exactly two consecutive 9’s such as 993, 1992 and 9929 but NOT
9295 or 1999?
Totally 261 consecutive 9's are there...
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suresh
Very correct Answer. Please leave solution here.