Find the number of strings of length 10 of lower case letters of the alphabet, with repeated letters allowed, that begin with c or end with v. you may enter your answer as an expression containing powers, no need to calculate the exact value.

So there will be

Step-by-step explanation:

We have given that string is of length of 10 alphabet which starts with c and end with v

Repetition is allowed

First we have to fix first and last character of the string, that is c and v

Now we have left 26 -2 = 24 letter

So the number of string will be =

So there will be of 10 character of alphabet  

i dont know i just need points

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.