need help with these math questions, Explanations will be helpful

Question 1 (3 points) Q1A. Consider the following graph: C b e a How many vertices are there in the graph? A/ How many edges are there in the graph? A/Question 2 (3 points) Q1B. Consider the following graph: C b e a How many vertices are there in the graph? A/ How many edges are there in the graph? A/Question 3 (3 points) Q2A. Consider the graph with the following vertices and edges: V = {a, b, c, d, e, f} E = {{a, b}, {a, c}, {a, d}, {a, f}, {b, c], {b, e}, {b, f}, {c, d}, {c, f], {d, e], {d, f}} C e a What is the degree of vertex f? A What is the total degree of the graph? AQuestion 4 (3 points) Q2C. Consider the graph with the following vertices and edges: V = {a, b, c, d, e, f, g} E = {{a, b}, {a, c], {a, f}, {b, c], {b, f}, {c, d}, {c, g], {d, e}, {d, f], {f, g}} b e a g What is the degree of vertex b? What is the total degree of the graph? A/\fQuestion 6 (3 points) Q3D. Consider the following graph: d b e a g Select all pairs of vertices which are adjacent in the graph. c and g d and f c and d b and g b and d Je and f f and g a and d