For the number of students who offer both Maths and Physics but not Chemistry. This corresponds to the intersection of the "Maths" circle and the "Physics" circle, excluding any part that overlaps w

The question asks for the number of students who offer both Maths and Physics but not Chemistry. This corresponds to the intersection of the "Maths" circle and the "Physics" circle, excluding any part that overlaps with the "Chemistry" circle.

In the Venn diagram, the number in the intersection of the Maths and Physics circles, but outside the Chemistry circle, is 2.

The options are:

a) 8

b) 6

c) 5

d) 4

e) 2

The number found in Step 2 is 2, which matches option (e).

The number of students who offer both Maths and Physics but not Chemistry is 2.

The final answer is $\boxed{\text{e) 2}}$