Python: Find the number of combinations of a,b,c and d
Python Basic - 1: Exercise-37 with Solution
Write a Python program which reads an integer n and find the number of combinations of a,b,c and d (0 ≤ a,b,c,d ≤ 9) where (a + b + c + d) will be equal to n.
n (1 ≤ n ≤ 50)
import itertools print("Input the number(n):") n=int(input()) result=0 for (i,j,k) in itertools.product(range(10),range(10),range(10)): result+=(0<=n-(i+j+k)<=9) print("Number of combinations:",result)
Input the number(n): 15 Number of combinations: 592
Python Code Editor:
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Previous: Write a Python program to compute the amount of the debt in n months. The borrowing amount is $100,000 and the loan adds 5% interest of the debt and rounds it to the nearest 1,000 above month by month.
Next: Write a Python program to print the number of prime numbers which are less than or equal to an given integer.
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