d. We want to calculate 4C2, 15C3, 12C5, 10C7. We also want to calculate 13P6, 23 P20. Follow the steps below:1. Write a recursive function factorial(n) that takes an integer n and returns n!, recall n! = nx (n − 1) × (n − 2)×....x12. Write a funtion combination(n,r) that uses (calls) the factorial function in (1) to find nCr, recall that nCr =3. Write a function permutarion(n,r) that uses (calls) the factorial function in (1) to find nPr, recall that nPr =]: def factorial(n):## write your code herereturn n*factorial(n)# Test your codeprint (factorial (5))#This should give 120]: def combination (n, r):result = 0## write your code herereturn result# Test your codeprint (combination (5, 2))#This should give 10]: def permutation (n, r):result = 0## write your code herereturn result# Test your codeprint (permutation (5, 2))#This should give 20Run these for results]: print ("combination results")print("*"*20)print (combination (4, 2))print (combination (15, 3))print (combination (12, 5))print (combination (10, 7))print("*"*20)]: print ("permutation results")print("*"*20)print (permutation (13, 6))print (permutation (23, 20))print("*"*20)n!r!(n-r)!n!(n-r)!

Define a recursive function called "factorial" that takes an integer "n" as input and returns the…

d. We want to calculate 4C2, 15C3, 12C5, 10C7. We also want to calculate 13 P6, 23 P20. Follow the steps below: 1. Write a recursive function factorial(n) that takes an integer n and returns n!, recall n! = nx (n-1) × (n − 2)x....x1 2. Write a funtion combination(n,r) that uses (calls) the factorial function in (1) to find nCr, recall that nCr = 3. Write a function permutarion(n,r) that uses (calls) the factorial function in (1) to find nPr, recall that nPr = n! r!(n-r)! n! (n-r)!

d. We want to calculate 4C2, 15C3, 12C5, 10C7. We also want to calculate 13 P6, 23 P20. Follow the steps below: 1. Write a recursive function factorial(n) that takes an integer n and returns n!, recall n! = nx (n-1) × (n − 2)x....x1 2. Write a funtion combination(n,r) that uses (calls) the factorial function in (1) to find nCr, recall that nCr = 3. Write a function permutarion(n,r) that uses (calls) the factorial function in (1) to find nPr, recall that nPr = n! r!(n-r)! n! (n-r)!

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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