Three resistors, each of resistance 6 Ω, are connected in such a way that that they form the three sides of a triangle. What is the equivalent resistance between any two vertices of the triangle?

Answer 1

6 Ù and 12 Ù in parallel have an equivalent resistance between two vertices, Req, that given by
1/6 + 1/12 = 1/Req
3/12 = 1/Req = 1/4

Req = 4 Ù

Answer 2

My cut and pasted "Ohm" symbols came out as Ù