sum_(r=0)^(10)x*10c_(y)*3^(r)*(-2)^(10*x)=-

sum_(r=0)^(10) r.^(10)C_(r),3^(r).(-2)^(10-r) is -

Sum of all coefficient of different power of x in the expansion sum_(r=0)^(10)('^10)C_(r)(x-3)^(r)4^(10-r) will be

The value of sum_(r=0)^(10)r^(10)C_r3^r(-2)^(10-r) is 20 b. 10 c. 300 d. 30

The value of sum_(r=0)^(10)r^(10)C_r3^r(-2)^(10-r) is 20 b. 10 c. 300 d. 30

Let (1 + x)^(10)=sum_(r=0)^(10)c_(r)x^(r) and (1+x)^(7)=sum_(r=0)^(7)d_(r),x^(r). If P=sum_(r=0)^(5)c_(2r) and Q=sum_(r=0)^(3)d_(2r+1) , then P/Q is equal to ______

Let (1+x)^10= sum_(r=0)^(10)c_(r) x^(r), and (1+x)^(7)= sum_(r=o)^(7)d_(r)x^(r). If P= sum_(r=0)^5c_(2r) and Q= sum_(r=o)^(3) d_(2r+1) , then (p)/(Q) is equl to

If sum_(r=1)^(10).^(10)C_(r)(2)^(20-r)(3)^(r-1)=(a^(10)-b^(10))/(3) then (a-b) is equal to

The value of sum_(r=0)^(10) (-1)^(r).4^(10-r)""^(30)C_(r)""^(30-r)C_(10-r) is equal to