Mathematics
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antkam
  • Member for 5 years
  • Last seen more than a week ago
  • Boston, MA, USA
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About

Engineer by day

Math puzzle enthusiast all the time

Favorite "simple" puzzle: arrange 7 points on a 2-D plane s.t. in any subset of 3 points, at least 2 of them are exactly 1 inch apart.

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View all questions and answers
All Questions Answers
Score Newest
answer
13
Expected number of dice rolls before rolling "1,2,3,4,5,6"
Dec 26, 2019
question
13
Giving a 1-hour talk to highschool math club: any topic suggestion?
Feb 23, 2021
question
12
Difficult coin weighing puzzle: 14 coins, 1 fake (heavier or lighter), 3 pre-determined weighings
Aug 22, 2020
answer
11
Exam with $12$ yes/no questions (half yes, half no) and $8$ correct needed to pass, is it better to answer randomly or answer exactly 6 times yes?
May 7, 2018
answer
9
In how many ways can we arrange the English alphabet so that exactly $10$ of the letters lie between $A$ and $Z$?
Oct 31, 2019
question
8
when is a longer series BAD for the better team?
May 23, 2018
question
7
Do the 12 lines of a bingo card have equal chance of winning?
Mar 8, 2019
question
7
Yankee swap without stealing: Prob of last player ending with his/her own gift
Dec 9, 2021
answer
7
A "distinguishing" family of subsets
May 28, 2019
answer
7
How many rectangles, whose boundary equals or exceeds that of a $3{\times}3$ square, can fit into a $9{\times}9$ square.
Dec 13, 2019

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