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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Python: Tips of the Day
Checks if the given number falls within the given range.
def tips_range(n, start, end = 0): return start <= n <= end if end >= start else end <= n <= start print(tips_range(2, 4, 6)) print(tips_range(4, 8)) print(tips_range(1, 3, 5)) print(tips_range(1, 3))
False True False True
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