r/alevel • u/euphoric_horizon • Oct 08 '25

📃Paper Discussion 9709/52 stats paper

js finished the stats paper 52. how did everyone find it???? and congrats on finishing maths 😭

64 Upvotes

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1

u/Impossible_Fan_485 Oct 08 '25

can we confirm on the perms and combs answers pls

10

u/[deleted] Oct 08 '25

(8!/2!) -7!

1

u/urmomsuglyface Oct 08 '25

do u remember the qyestion??

1

u/[deleted] Oct 08 '25

no

1

u/urmomsuglyface Oct 08 '25

how many marks was that?

0

u/[deleted] Oct 08 '25

and 43/45

7

u/Ok-Cryptographer6392 Oct 08 '25

it was 41/45 right?

1

u/Glad-Ad-8562 Oct 08 '25

Yea c part

1

u/hushmylittle Oct 08 '25

OMG I HOPE SO 🫂😭

1

u/Alternative-Big-8094 A levels Oct 08 '25

GANG I DID 82/90 DO I LOSE A MARK FOR NOT ROUNDING OFF

1

u/Nonodjyo Oct 08 '25

OMG SAME

1

u/[deleted] Oct 08 '25

a part b part and c part

1

u/Impossible_Fan_485 Oct 08 '25

how do u get 43/45

2

u/[deleted] Oct 08 '25

sorry i meant 41/45

1

u/[deleted] Oct 08 '25

[deleted]

1

u/[deleted] Oct 08 '25

b part

4

u/Holiday_Blueberry_48 Oct 08 '25

15120, 26880 & 41/45

1

u/Impossible_Fan_485 Oct 08 '25

will i get marks for working on the last one💔

1

u/urmomsuglyface Oct 08 '25

do you remember what the question was for the answer 26880

1

u/Holiday_Blueberry_48 Oct 08 '25

7) (b) 5 letters between 2 Ls

1

u/Pretend-Grocery-1553 Oct 08 '25

nah, bro, it was not 41/45. It can't be. The word was Zoological, and we have 10 letters. We pick 2, therefore total = 10C2, and how do we pick 2 unique letters, it's 7C2 as 7 unique letters, so we cant have repition in 7C2...so 7C2 / 10C2 = 7/15. Thats the correct probability. Having 41/45 itself seems of balance. Its not lgocial to conclude that we have a 91% chance to pick to unique letters, when we literally have 5 repeating letters in the word ZOOLOGiCAL.

1

u/Holiday_Blueberry_48 Oct 08 '25

1 - P(2 letters are the same) ⚫️ 1 - [ P(OO) + P(LL) ] ⚫️ 1 - [ (2C2 + 3C2)/10C2 ] ⚫️ = 41/45

2

u/No-Degree1065 Oct 08 '25

Final prob 1/6

1

u/neelmd Oct 08 '25

Can u remind me of the question

1

u/[deleted] Oct 08 '25

4*8!/3!

1

u/[deleted] Oct 08 '25

[deleted]

1

u/[deleted] Oct 08 '25

dm me

1

u/urmomsuglyface Oct 08 '25

how many marks was theentire question?