Assume that you have run the following statements: x = 3 y = "4" z = "5.6" Which expression would NOT cause an error? str(x, y) + z str(x) + int(y) y + z x + y

please quickly thanks ! (a) Determine whether the following variable declaration is valid int 1number; A Valid B Invalid (b) Determine whether the following variable declaration is valid i=1; A Valid B Invalid (c) Determine whether the following variable declaration is valid char a = 'a'; A Valid B Invalid

QUESTION 1 Evaluate the following expressions, assume the following declarations: int x = 4; int y = 9/2; int num = 6; num *= x + y; What is the value of the num after expression is evaluated?

Flag question Which of the following statements are valid? Select one or more: {1,2,3,4,5} n {1,4,8, 12} = {1, 2, 3, 4, 5, 8, 12} O {1,3,5,7,9,11,.... } U {2, 4, 6, 8, 10, .... } = N (a, b, c, d, e} n {a, e, i, o, u} = {a, e} Let A = {1, 3, 5, 7, 9}, B = {2, 4, 6, 8} and C = {1,2,3,4}. Then (AUB) = {1,2,3,4} { 1, 3, 5, 7, 9, 11, .……. . For any sets X, Y and Z, the equality (X n Y) u Z = (XU Y) N Z is valid (Hint: You might use venn diagrams to help detemine if the equality is valid) } U {2, 4, 6, 8, 10, . .} = Ø Let A = {1,3,5,7,9}, B = {2, 4, 6, 8} C = {1, 2, 3, 4). Then (An B) UC = {1,2,3,4} If U = {1, 2, 3, ...., 7, 8, 9} then {1,3,5,7,9}º = {2,4,6,8}