The value of `sumsum_(0leqiltjleqn) (C(n,i)+C(n,j))` is

Find the value of sumsum_(0leiltjlen) (""^(n)C_(i)+""^(n)C_(j)) .

Find the value of sumsum_(0leiltjlen) (""^(n)C_(i)+""^(n)C_(j)) .

The value of (sumsum)_(0leilejlen) (""^(n)C_(i) + ""^(n)C_(j)) is equal to

If a_(n) = sum_(r=0)^(n) (1)/(""^(n)C_(r)) , then the value of (sumsum)_(0leiltjlen) (i/(""^(n)C_(i))+j/(""^(n)C_(j)))

If (1+x)^(n)=C_(0)+C_(1)x+C_(2)x^(2)+….+C_(n)x^(n) , then the value of sumsum_(0lerltslen)(r+s)(C_(r)+C_(s)) is :

If (1+x)^(n)=C_(0)+C_(1)x+C_(2)x^(2)+….+C_(n)x^(n) , then the value of sumsum_(0lerltslen)(C_(r)+C_(s))^(2) is :

If (1+x)^(n)=C_(0)+C_(1)x+C_(2)x^(2)+….+C_(n)x^(n) , then the value of sumsum_(0lerltslen)(r+s)(C_(r)+C_(s)) is :

If (1+x)^(n)=C_(0)+C_(1)x+C_(2)x^(2)+…..+C_(n)x^(n) , then the value of sumsum_(0lerltslen)(r*s)C_(r)C_(s) is :

If (1+x)^(n)=C_(0)+C_(1)x+C_(2)x^(2)+….+C_(n)x^(n) , then the value of sumsum_(0lerltslen)(C_(r)+C_(s))^(2) is :