" If "sum_(i=1)^(20)((20)/(20)C_(i)+^(2)C_(i-1))^(3)=(k)/(21)," then "k

If Sigma_(i=1)^(20) ((""^(20)C_(i-1))/(""^(20)C_(i)+""^(20)C_(i-1)))^(3)=(k)/(21) , then k equals

If Sigma_(i=1)^(20) ((""^(20)C_(i-1))/(""^(20)C_(i)+""^(20)C_(i-1)))^(3)=(k)/(21) , then k equals

If Sigma_(i=1)^(20) ((""^(20)C_(i-1))/(""^(20)C_(i)+""^(20)C_(i-1)))^(3)=(k)/(21) , then k equals

If Sigma_(i=1)^(20) ((""^(20)C_(i-1))/(""^(20)C_(i)+""^(20)C_(i-1)))^(3)=(k)/(21) , then k equals

If sum_(i=1)^(20)((""^(20)C_(i-1))/(""^(20)C_(i)+""^(20)C_(i=1)))^(3)=k/21 , then k/20 equals _________.

sum_(i=1)^20 [(.^20C_(i-1))/(.^20C_i+.^20C_(i-1))]^3=k/21 then find the value of k. (a) 400 (b) 100 (c) 50 (d) 200

sum_(i=1)^20 (.^20C_(i-1))/(.^20C_i+.^20C_(i-1))=k/21 then find the value of k. (a) 400 (b) 100 (c) 50 (d) 200

If sum_(i=1)^(10) ( (""^10C_(i-1))/(""^10C_i + ""^10C_(i-1) ))^3 = (k)/(11) , then k equals :

The standard deviation of n observations x_(1), x_(2), …, x_(n) is 2. If sum_(i=1)^(n)x_(i)=20 and sum_(i=1)^(n)x_(i)""^(2)=100 , then n is : a) 10 or 20 b) 5 or 10 c)5 or 20 d) 5 or 15