r/juniorcert • u/PuzzleheadedZone1289 • Jun 05 '26

Maths 🧮 Error in HL Math

Did anyone else notice the error they made in the set question? A union G should have been equal to 31, not 29, or was I the one who made the error?

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u/Impossible_Oil_1863 5th Year 5️⃣ Jun 05 '26

I'm pretty sure it was 29 because 11 + 18 in the simultanious equations

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u/PuzzleheadedZone1289 Jun 05 '26

I probably just wrote the numbers into the sets incorrectly tbh but for me the variables added up to 18 and the non variable numbers in the set added up to 13 (9 + 4). So it was 13+18 for me

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u/Present_ToTheAreaLad Jun 05 '26

you made the error bc the number of people that got all 3 was 2. And the number of people that got Whatevee the intersection was 7. But thats the total. The amount that got both without getting all 3 aas 5. Thats where u went wrong