VeritasPrepKarishma wrote:
hellscream wrote:
Could you tell me the way to calculate the sum which the repetition is allowed? For example: from 1,2,3,4. how can we calculate the sum of four digit number that formed from 1,2,3,4 and repetition is allowed?
The logic is no different from 'no repetition allowed' question. The only thing different is the number of numbers you can make.
How many numbers can you make using the four digits 1, 2, 3 and 4 if repetition is allowed?
You can make 4*4*4*4 = 256 numbers (there are 4
...
![Will Linley – Head First – Single [iTunes Plus M4A]](http://is1-ssl.mzstatic.com/image/thumb/Music211/v4/3a/fe/29/3afe2925-2b4b-c869-f8bf-8a81bcd2ac03/26UMGIM95096.rgb.jpg/316x316bb.webp)
