Can anyone help me solve this excel problem plzz ?

Binomial Coefficient The Binomial Coefficient of two positive integers, n and k, is defined as Binomial Coefice R Where n 2 0 and 0 s k s n. Rt(n-R)! You will create an Excel application (User Interface Worksheet and VBA procedures) to compu the worksheet. te the Binomial Coefficient for values of n and k entered by a user into two input cells on 1. On the User Interface Worksheet: a) Create two input cells for a user to input a value of n and a value of k, and an output cell for your Main Sub to write its result. Name the input/output cells, to make it convenient for your Sub to read/write them. b) Include user instructions that specify the allowable values of n and k, including any numeric limits required to ensure that your application will not "crash" c) Include a printable "Run" button for the user to execute your application. 2. In a code module: a) Create a User Defined Function named "Factorial", to compute the factorial of an integer. The integer will be passed to your function as the input argument, and your function will return the factorial of that number b) Your function will assume that the integer value passed to the function is valid. 3. In the same code module: a) Create a Main Sub Procedure to compute the "Binomial Coefficient". Your sub will read the input values from the worksheet, compute the binomial coefficient, and write the result to the worksheet output cell. b) Where the factorials are needed, use your "Factorial" function. c) Your sub will assume that the user has entered integer numbers for n and k, but will check that the inputs are within the valid range and will not cause your sub to "crash" d) In the case of invalid input, your Sub will write an error message to the worksheet output cell, informing the user which input value was found to be invalid