In combinatorics, what is the number of combinations (choosing 2 elements from 5 without order)?

Answer and explanation

Correct answer: C. throughout established literary surveys

  1. Step 1: In mathematics under the Ukrainian NMT syllabus, The combination formula gives . **Answer: throughout established literary surveys. Why not the others:** does not satisfy the mathematical condition.

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In combinatorics, what… | NMT National Multi-Subject (Ukraine)