Given-the-7-element-set-A-a-b-c-d-e-f-g-find-a-collection-T-of-3-element-subsets-of-A-such-that-each-pair-of-elements-from-A-occurs-exactly-in-one-of-the-subsets-of-T- Tinku Tara June 4, 2023 Set Theory 0 Comments FacebookTweetPin Question Number 24366 by Tinkutara last updated on 16/Nov/17 Giventhe7−elementsetA={a,b,c,d,e,f,g},findacollectionTof3−elementsubsetsofAsuchthateachpairofelementsfromAoccursexactlyinoneofthesubsetsofT. Commented by Rasheed.Sindhi last updated on 18/Nov/17 Questionsimposed−(i)Howmanysuchcollectionscanbeproduced?(ii)Howmany3−memberedsetsarenecessaryinordertodetermineaparticularcollectionacquiringaboveproperty? Answered by Rasheed.Sindhi last updated on 17/Nov/17 .Strategy.−Possiblepairs:(abacadaeafagbcbdbebfbgcdcecfcgdedfdgefegfg)TakeapairfromaboveandincludeanymemberofA(otherthanmembersofthepair)inordertomakeasetof3elementsForexampleinpaira,bwecanincludec,d,e,forg.Saywe′vemade{a,b,c}.Froma,b,cthreepairscanbemadeab,bcandac.Socrossoutthesefromtheabovetableofpairs.Nexttakeanotherpairwhichisnotcrossedoutandincludeanelementinitinsuchawaythatallthethreepairsproduced(fromthesetofthreeelements)arenewi−enotcrossedout.Goontillallthepairsofabovetablecrossout.T={{a,b,c},{a,d,e},{a,f,g},{b,d,f},{b,e,g},{c,d,g},{c,e,f}} Commented by Tinkutara last updated on 17/Nov/17 ThankyouverymuchSir! Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: In-a-classroom-when-the-students-sit-2-per-bench-11-students-are-left-with-no-sits-And-when-they-sit-3-per-bench-7-benches-are-left-empty-Determine-the-number-of-students-in-this-classroom-Next Next post: S-m-0-1-n-0-m-10-n-m- Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Save my name, email, and website in this browser for the next time I comment.