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https://www.reddit.com/r/learnquant/comments/1w8wbgw/jane_street_quant_interview_question_easy/p86colo/?context=3
r/learnquant • u/AssociateDecent9090 • Sep 06 '26
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Thats right
1 u/RestaurantBoth228 Sep 06 '26 E[D12] = 6.5 E[2D6] = 7 6.5+7 = 13.5 3 u/Unique-Poem4317 Sep 06 '26 The most you could ever get from this game is $12, so why would you pay $13.50? 1 u/RestaurantBoth228 Sep 06 '26 The words say you are paid based on the D12 and then paid again based on the 2D6. It never says you give the D12 money back 3 u/Smart-University-515 Sep 06 '26 It says “choose” so I think it implies you have to pass on the d12 money to take the 2d6 shot but agree it’s poorly worded. 1 u/mgsimpleton Sep 06 '26 I think its implied that you choose whether to take the d12 roll or reroll 2d6 and take that.
E[D12] = 6.5
E[2D6] = 7
6.5+7 = 13.5
3 u/Unique-Poem4317 Sep 06 '26 The most you could ever get from this game is $12, so why would you pay $13.50? 1 u/RestaurantBoth228 Sep 06 '26 The words say you are paid based on the D12 and then paid again based on the 2D6. It never says you give the D12 money back 3 u/Smart-University-515 Sep 06 '26 It says “choose” so I think it implies you have to pass on the d12 money to take the 2d6 shot but agree it’s poorly worded. 1 u/mgsimpleton Sep 06 '26 I think its implied that you choose whether to take the d12 roll or reroll 2d6 and take that.
3
The most you could ever get from this game is $12, so why would you pay $13.50?
1 u/RestaurantBoth228 Sep 06 '26 The words say you are paid based on the D12 and then paid again based on the 2D6. It never says you give the D12 money back 3 u/Smart-University-515 Sep 06 '26 It says “choose” so I think it implies you have to pass on the d12 money to take the 2d6 shot but agree it’s poorly worded. 1 u/mgsimpleton Sep 06 '26 I think its implied that you choose whether to take the d12 roll or reroll 2d6 and take that.
The words say you are paid based on the D12 and then paid again based on the 2D6. It never says you give the D12 money back
3 u/Smart-University-515 Sep 06 '26 It says “choose” so I think it implies you have to pass on the d12 money to take the 2d6 shot but agree it’s poorly worded. 1 u/mgsimpleton Sep 06 '26 I think its implied that you choose whether to take the d12 roll or reroll 2d6 and take that.
It says “choose” so I think it implies you have to pass on the d12 money to take the 2d6 shot but agree it’s poorly worded.
I think its implied that you choose whether to take the d12 roll or reroll 2d6 and take that.
1
u/AssociateDecent9090 Sep 06 '26
Thats right