In a fraternity with 39 39 members 18 take mathematics 5 tak

In a fraternity with 39 39 members, 18 take mathematics, 5 take both mathematics and physics physics, and 8 take neither mathematics nor physics physics. How many take physics physics but not mathematics?

fraternity of 39 members with 8 taking neither math or physics Of the(39-8)= 31, 5 took both. 31 - 5 = 26 taking one. 18 taking just Math. Just (26-18)= 8 took only Physics.