Write a C Program that will compute for npr (n taken r permutations).

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter15: Recursion
Section: Chapter Questions
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✓ Allowed languages
C
Problem Statement
Write a C Program that will compute for npr (n taken r
permutations).
Input
Input starts with a number N and is followed by N pairs of
numbers n and r.
Output
Output n Pr
Limits
1 <N< 20
1 \le r \le n \le 1000000
Notes
Problems will have test cases that are not listed in their
specification. Your solution must produce the right output for
these hidden test cases.
Sample Input #1
5
4 1
4 3
9 3
2 2
9 10
Sample Output #1
4
24
504
2
not valid
Copy
Copy
Transcribed Image Text:✓ Allowed languages C Problem Statement Write a C Program that will compute for npr (n taken r permutations). Input Input starts with a number N and is followed by N pairs of numbers n and r. Output Output n Pr Limits 1 <N< 20 1 \le r \le n \le 1000000 Notes Problems will have test cases that are not listed in their specification. Your solution must produce the right output for these hidden test cases. Sample Input #1 5 4 1 4 3 9 3 2 2 9 10 Sample Output #1 4 24 504 2 not valid Copy Copy
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