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[" "ression "(sum(r=0)^(10)C(r))(sum(k=0...

[" "ression "(sum_(r=0)^(10)C_(r))(sum_(k=0)^(10)(-1)^(k)(^10C_(k))/(2^(k)))^(" is ")],[[" (B) "2^(20)," (c) "]]

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The value of the expression (sum_(r=0)^(10)C_(r))(sum_(k=0)^(10)(-1)^(k)(^^10C_(k))/(2^(k))) is :

The value of the expression (sum_(r=0)^10 "^10 C_r)(sum_(k=0)^10 (-1)^k (^10 C_k)/2^k) is :

The value of sum_(r=1)^(n+1)(sum_(k=1)^(n)C(k,r-1))=

sum_(r=0)^(10) (-1)^(r) (""^(10)C_(r))/(""^(r+2)C_(r)) is equal to .

sum_(k=0)^20(.^20C_k)^2 = ?

Sum of the series sum_(k=1)^(oo)sum_(r=0)^(k)(2^(2r))/(7^(k))(""^(k)C_(r)) is:

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

Evaluate :sum_(k=1)^(10)(3+2^(k))

sum_(k=0)^(20)(.^(20)C_(k))^(2) is equal to