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Apr
22
comment How many plates can be made?
i think they are considring 000 not a number
Apr
22
comment How many plates can be made?
i have a suspicion about the 1st question whether it will be 26*26*999 Or 26*26*1000.........I am not getting why the text book is used 999
Apr
22
awarded  Commentator
Apr
22
awarded  Scholar
Apr
22
accepted How many plates can be made?
Apr
22
comment How many plates can be made?
you are right at second question
Apr
22
comment How many plates can be made?
Ya ya for the 1st question answer should be 26*26*10*10*10 but given answer in text book is 26*26*999
Apr
22
comment How many plates can be made?
2)If No repetition then 26P2*10P3=468000
Apr
22
comment How many plates can be made?
1)if repetition then 26^2 *999 will be the answer...that is what i am geeting from textbook....do you think this answer is right?
Apr
22
comment Non-negative integral solutions of $X_1+X_2+X_3+X_4<n$
Please make me understood using more words
Apr
22
comment Non-negative integral solutions of $X_1+X_2+X_3+X_4<n$
I dont think so...
Apr
22
asked How many plates can be made?
Apr
22
awarded  Student
Apr
22
asked Non-negative integral solutions of $X_1+X_2+X_3+X_4<n$
Apr
21
comment Sum of Digits divided by 5 and 9?
Try out how can we generalize the divisiblity like you have done it for summation
Apr
21
comment Sum of Digits divided by 5 and 9?
@Ross Ya ya But here there is no concern about divisiblity is given....In my original question numbers must be divided by 5 and 9.............I have gone thru what you are saying.....THX
Apr
21
comment Sum of Digits divided by 5 and 9?
The main hardship for me is summing up the digits.I have tried this question making it short lik suppose only 1,2,3,4 are used and using this how many 3 digit numbers can be made and then what will be the sum..lik this
Apr
21
comment Sum of Digits divided by 5 and 9?
First digit cant be Zero
Apr
21
comment Sum of Digits divided by 5 and 9?
I really tried but i am unable to solve full...any way i will do some calculation Now..the i will post
Apr
21
asked Sum of Digits divided by 5 and 9?