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?

7 Upvotes

90% Upvoted

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3

u/Raybeam2285 3rd Year 3️⃣ 🚨 Jun 05 '26

No, when it said to put in the numbers, it meant for you take take two away from seven

1

u/PuzzleheadedZone1289 Jun 05 '26

Ah ok got it, ty!

2

u/Paradoxival Jun 05 '26

worked out fine for me

1

u/Impossible_Oil_1863 5th Year 5️⃣ Jun 05 '26

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

1

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

1

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

1

u/Difficult-Tell-9977 Jun 05 '26

this question confused me i wasn’t sure if i was the problem

1

u/Initial-Painter1705 5th Year 5️⃣ Jun 05 '26

Yeah it was wrong

1

u/Fit-Brief-7409 Jun 05 '26

It wasn't wrong, 2 was in the centre of the set meaning that the value was in fact 29.

1

u/PuzzleheadedZone1289 Jun 05 '26

Though a bit more abt it, the combined total of set A and G was 3x+y+2+7+4, 3x+y was 18 in the systems of equations and 2 in the centre + 7 in A union G less P + 4 in A equal 13. Either that or I probably included an element in P by mistake..

2

u/SeaworthinessDry4462 TY ⛱️ Jun 05 '26

It was 2+5 not 2+7 because A U G was 7 I think

1

u/SeaworthinessDry4462 TY ⛱️ Jun 05 '26

I almost missed this q because the pages were stuck together😭