The sum `(((11),(0)))/1+(((11),(1)))/2+(((11),(2)))/3+.........+(((11),(11)))/12`equals (where `((n),(r))` denotes `nC_r`)

The sum (((11),(0)))/1+(((11),(1)))/2+(((11),(2)))/3+.........+(((11),(11)))/12equals (where ((n),(r)) denotes nC_r)

(11C_(0))/(1)+(11C_(1))/(2)+(11C_(2))/(3)+......+(11C_(10))/(11)=

(.1^(11)C_(0))/(1)+(.^(11)C_(1))/(2)+(.^(11)C_(2))/(3)+....+(.1^(11)C_(10))/(11)

11^(1/2)/11^(1/4) equals to :

(5 1/4-3 1/3)= (12)/(23) (b) 2 1(11)/(12) (d) (11)/(12)

int(x-.^(11)C_(1)x^(2)+.^(11)C_(2)x^(3)-.^(11)C_(3)x^(4)+...-.^(11)C_(x^(12)))dx equal to

The value of (30,0)(30,10)-(30,1)(30,11)+(30,2)(30,11)-.............+(30,20)(30,30) , where (n,r)=nC_r is a. (30,10) b. (30,15) c. (60,30) d. (31,10)

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

The value of sum_(r=1)^(11)tan^(2)((r pi)/(24)) is

The value of sum_(r=1)^(11)tan^(2)((r pi)/(24)) is