Question

this question is logical:suppose in a semester examination 600 student sat for math, 300 physics while 173 student sat for both what is the number of student that sat for just a course

Answer 1

since the 173 sat in for both math and physics, you want to subtract 173 from both the math and physics students.

600-173 = 427 just math
300-173 = 127 just physics

add 427 and 127, and you get the students who took only one test: 554 students

Answer 2

M = Maths
B = Both
P = Physics