A radio station has to choose 2 weeks of the four in…

A radio station has to choose 2 weeks of the four in a month to broadcast a certain program, and that set will repeat each month. The program can be broadcast equally on any of the four week —- 1st week vs. last week don’t matter at all —- nor does it matter whether the week the program airs are adjacent or not. Absolutely any 2 weeks of the 4 weeks can be chosen. How many different week combinations of the 4 weeks can be constructed?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #54841