If you know how to do math 30 probability please help answer this question three events, A, B, C are all equally. If there are no other possible events which of the following statements is true?

a) P(A) = 0

b) P(B) = 1

c) P(C) = 1/3

d) P(D) = 1/2

Find the gradient of f(x, y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

Two lines parallel to the same plane are parallel to eachother

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)