NCERT Example 7 - Permutations and Combinations
Question: If n!/[r!(n − r)!] = 10 for n = 5, find r.
Answer: r = 2 or 3.
Full step-by-step NCERT solution with diagrams on Something by Zero.
Question: If n!/[r!(n − r)!] = 10 for n = 5, find r.
Answer: r = 2 or 3.
Full step-by-step NCERT solution with diagrams on Something by Zero.