A student applying at a college should take three courses

[m.gayatri]

A student applying at a college should take three courses. There are
altogether four courses, namely, Science, Maths, Social Sudies and
Economics. (The names may vary, but the pattern is the same)
One can take a Science course only if he has taken a Maths course.
One can take a Maths course only if he has taken a Science course.
One can take a n Economics course only if he has taken a Social Studies
course.
Q1: Which of the following is a possible course?
a. Two Science courses and a Social Studies Course.
b. Two Maths courses and an Economics course.
c. One Mats course, one Science course and a Social Studies course.
d. One Maths course, one Science course and an Economics course.
Q2: Which of the following courses a student can take?
I. One Science, one Social Studies, one Economics
II. Two Science, one Social Studies
III. Two Science, one Maths.
a. I only b. III only
c. I and II only d. II and III only
Q3: Which of the following is not a possible course?
a. Two Science courses and a Maths course.
b. Two Maths course and a Science course.
c. One Maths course, one Science course and a Social Studies Course.
d. One Maths course, one Science course and an Economics course.