If n =(2020) ! then 1 ₂ n + 1 ₃ n + 1 ₄ n + + 1 ₂₀₂₀ n is equal to

Step-by-step solution

1 ₂ n + 1 ₃ n + 1 ₄ n + + 1 ₂₀₂₀ n = _ n 2+ _ n 3+ _ n 4+ + _ n 2020= _ n (2 3 4 2020)= _ (2020) ! (2020) ! ( n=2020 ! given )=1