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

The value of underset(r=0)overset(10)sumr^(10)C_(r),3^(r).(-2)^(10-r) is -

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

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

Find underset(r=0) overset(10)sumr^ (10)C_(r).3^(r).(-2)^(10-r)

Find underset(r=0) overset(10)sumr^ (10)C_(r).3^(r).(-2)^(10-r)

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 sum of the series sum_(r=0)^(10) .^(20)C_(r) , is 2^(19)+{(.^(20)C_(10))/2} .

The sum sum_(r=0)^(m) ""^(10)C_(r) xx""^(20)C_(m -r) is maximum . When m=