Which of the following functions are O(n^2) a. f(n)= n^3 b. f(n) = n^2 c. f(n) = n d. f(n) = 100 2. Which of the following functions are ?(n^2) a. f(n)= n^3 b. f(n) = n^2 c. f(n) = n d. f(n) = 100 3. Which of the following functions are ?(n^2) a. f(n)= n^3 b. f(n) = n^2 c. f(n) = n d. f(n) = 100 4. Write the sum of the Geometric Progression. 6+12 +24+48 ......... up to 11-terms. a. 682 b. 2023 c. 6141 d. 8069 5. Given a function 2n2 + 4n - 3. What C and N0 satisfy the O(n2) definition? a. N0 >=1, c = 4 b. N0 >=1, c = 2 c. N0>=1, c = 3 d. N0>=2, c = 3.5 6. Galactic Algorithms are not useful because of. a. Huge hidden constants