Variation 3 · answer guide
Combinatorics — Larger pool
Question
From men and women, form a committee of men and women. How many ways?
This practice question was inspired by Question 11(d) in the 2021 NSW HSC Mathematics Extension 1 examination, © NESA. It is an original TestMum variation that practises the same mathematical idea, not an official NESA question.
Step by step
- State the final answer clearly in the form the question requested..
Common mistake: changing so many features that the new example no longer tests the same mathematical idea.
Verification: and .
Any mark labels are a TestMum study aid, not an official NESA marking allocation.
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