yeah ....330 is perfect answer madhu ....explaination ... initially in units place . 6's are replaced by 9 ..there are 10 6's that got replaced by 9 so 9-6=3 3*10=30 similarly there are 10 6's that got replaced by 9 in the ten's digit place ie 60-90, 61-91 ,...so on ..difference 30 ...repeated 10 times ..30*10=300 totally 300+30=330
4 comments:
i got 300
no the answer is 330
yeah ....330 is perfect answer madhu ....explaination ...
initially in units place . 6's are replaced by 9 ..there are 10 6's that got replaced by 9 so 9-6=3
3*10=30
similarly there are 10 6's that got replaced by 9 in the ten's digit place ie
60-90, 61-91 ,...so on ..difference 30 ...repeated 10 times ..30*10=300 totally 300+30=330
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