kanikab wrote:
VeritasKarishma wrote:
144144 wrote:
is there another way to solve this?
I once saw someone solving this kind of questions by multiplying the amount of different number of digits u can put in each place (in each different digit)
I once saw someone solving this kind of questions by multiplying the amount of different number of digits u can put in each place (in each different digit)
You can but you would have to take multiple cases and that would be really cumbersome. The left most digit can be either a 3 or a 4 but then next digit depends on what the leftmost digit is. If left most digit is 3, next digit can be anything from 2 to 9. If the leftmost digit is 4, the next digit can be
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