Answer:
11232000
Step-by-step explanation:
Given that an identification code is to consist of 2 letters followed by 3 digits.
Also given that repetition is not permitted.
Since order matters here we find that permutation to be used.
Out of 26 letters, 2 letters can be selected without repitition in ways
And 3 codes can be selected from 10 digits in ways
Hence total number of codes =
No of ways = 11232000
Answer:
<h2 />Step-by-step explanation:
given the differential equation x^4(dy/dx) +x^3y =- sec (xy). Solving using the variable separable method;
Substituting v and dv/dx into the equation above we have;
Separating the variables:
The final expression gives the solution to the differential equation.