The value of `1+1.1!+2.2!+3.3!+...+n.n!` is

the value of 1.1!+ 2.2!+ 3.3!+ ....+ n.n!

1+1.1!+2.2!+3.3!+......n.n! is equal to

The value of 1*1!+2*2!+3*3!+…+N*N! is

Prove by the principle of mathematical induction, that 1.1!+2.2!+3.3!+.....+(n.n!)=(n+1)!-1"for all natural number "n (n!=1xx2xx3....n)

The value of ""(n)C_(1). X(1 - x )^(n-1) + 2 . ""^(n)C_(2) x^(2) (1 - x)^(n-2) + 3. ""^(n)C_(3) x^(3) (1 - x)^(n-3) + ….+ n ""^(n)C_(n) x^(n) , n in N is

The value of 1/(i^n) + 1/(i^(n + 3)) + 1/(i^(n + 2)) + 1/(i^(n + 1)) is :

Find the value of 2^(n){1.3.5.....(2n-3)(2n-1)}