Byteland country is very famous for it's own variety of rules and customs. People from the normal world only knows 26 alphabets but the scientists in the Byteland country always try to invent new alphabets. Let N be the number of alphabets invented by the Byteland country scientists. Alice is living in Byteland country and one of her friends gifted her a new pet on her Birthday. In the Byteland country each pet must contain a name as suggested by the astronomer. After consulting an astronomer Alice came to know that length of the pet name must be of L letters and among L letters she need to keep X number of letter prefix as suggested by the astronomer. Now Alice has decided to form the names by following the astronomer's suggestion, as Alice is weak in mathematics can you please help her to find out the number of valid names that she can form

which one is right ans....plz tell
11 years agoHelpfull: Yes(4) No(0)
NcX * NcL-x
11 years agoHelpfull: Yes(3) No(10)
(26+N)C(L-X)*(l-x)!......asked that number of valid names that's y (l-x)! ......
11 years agoHelpfull: Yes(3) No(1)
NcX ^ LcN-X
11 years agoHelpfull: Yes(1) No(5)
Here it is a case of name so we need to consider order also.

so,
NpX * NpL-X. (Where letters are repeated).
11 years agoHelpfull: Yes(1) No(1)
(26+N)C(L-X)........26 alphabets are also there
11 years agoHelpfull: Yes(1) No(0)
what is c in yours solution
10 years agoHelpfull: Yes(0) No(0)

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