tag:blogger.com,1999:blog-6241972711325960321.post6022123180068815043..comments2019-05-20T16:25:02.669+08:00Comments on Welcome all!: SMO 2018 (Junior Section) AnswersLim Jeckhttp://www.blogger.com/profile/14770828350235876545noreply@blogger.comBlogger82125tag:blogger.com,1999:blog-6241972711325960321.post-6181575660451216582018-10-24T14:49:09.882+08:002018-10-24T14:49:09.882+08:00@piauw
1:yes
2:yes
3:how did you get 1023!?!?! I g...@piauw<br />1:yes<br />2:yes<br />3:how did you get 1023!?!?! I got 23... like firstly, both sides cannot be even <br />Obviously first case is 1<br />Then next using my poor logic, I found that for the greatest common divisor=1, one side must be prime numbers >50 (eg 1x47) other side is 100!/47, the greatest common divisor will be 47 even though it is prime because 47x2=94 is there and 94 can divide by 47...<br />So cases is 11 primes >50 times 2(53 and 53x1) + original 1 case<br />4:they asked for the integers... not how many...<br />5: you said pentagon can be made but interior angle of pentagon is 108.. how do you make 108 with 60 and 90 only?<br /><br />Anyway I am just stupid boy correct me because I sure as hell 99% am wrong Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-86750043123811335382018-07-09T12:40:19.911+08:002018-07-09T12:40:19.911+08:00Hi guys, when are the round 2 results going to be ...Hi guys, when are the round 2 results going to be out? I want to know how I did>Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-33205900986330225842018-06-29T20:08:10.455+08:002018-06-29T20:08:10.455+08:00Hi guys, what do you think is the mark for top 30,...Hi guys, what do you think is the mark for top 30, like 50/ 75???<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-10051775467011573882018-06-25T22:19:50.914+08:002018-06-25T22:19:50.914+08:00Yes 39 out of 50 on round 2Yes 39 out of 50 on round 2Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-79312218966232617762018-06-25T18:14:18.127+08:002018-06-25T18:14:18.127+08:00wow, 39? is that your score on 2nd round only? and...wow, 39? is that your score on 2nd round only? and will the result from previous round get added to my score on the round 2? i think i got 30 for 2nd round and 20 from the first round. how much more point usually needed on the 2nd round to get gold? i think that 2nd round question from previous year is almost impossible to answer by normal student,only this year that's really easyAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-67716431672380416112018-06-25T16:34:40.767+08:002018-06-25T16:34:40.767+08:00Is it good?Is it good?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-40776596564121873352018-06-25T16:34:07.760+08:002018-06-25T16:34:07.760+08:00I think I got like 39I think I got like 39Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-44233297696171474062018-06-24T20:51:41.234+08:002018-06-24T20:51:41.234+08:00Was it too hard? It was actually easier than last ...Was it too hard? It was actually easier than last year IMO<br />I believe the answers are somewhere along these lines<br />1. (8,1), (4,4), (0,7)<br />2. 14<br />3. 1023 (on hindsight I believe it is 2047 or 2048)<br />4. 130<br />5. 5-12, 14<br /><br />Can someone check? Thanks in advancePiauwnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-70085132226957577712018-06-24T14:57:20.292+08:002018-06-24T14:57:20.292+08:00Can someone share the Round 2 answers. I felt it w...Can someone share the Round 2 answers. I felt it was a bit too hard.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-53860125008709936332018-06-24T14:56:34.842+08:002018-06-24T14:56:34.842+08:00You have to use similarity laws making triangle AB...You have to use similarity laws making triangle ABC similar to triangle BCD to find BD as square root of 196 so BD = 14Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-78276918487838220522018-06-24T14:55:26.734+08:002018-06-24T14:55:26.734+08:00No its 14
No its 14<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-55736264423141256772018-06-23T20:47:19.808+08:002018-06-23T20:47:19.808+08:00I think Q2 of SMO round 2 is 14√2
By hypothesis, i...I think Q2 of SMO round 2 is 14√2<br />By hypothesis, it's easy to prove that ABC is an equilateral triangle<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-30974686485280171812018-06-23T15:57:22.110+08:002018-06-23T15:57:22.110+08:00What is the answer for Question 2 of SMO round 2?What is the answer for Question 2 of SMO round 2?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-47178762941101838772018-06-23T13:11:46.145+08:002018-06-23T13:11:46.145+08:00question 1 of round 2 is recycled from past year.question 1 of round 2 is recycled from past year.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-893236968939343652018-06-22T12:22:05.424+08:002018-06-22T12:22:05.424+08:00Congrats!Congrats!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-80875506132253437182018-06-18T16:34:20.715+08:002018-06-18T16:34:20.715+08:00I got selected for Round 2I got selected for Round 2Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-77846002454990120292018-06-15T17:16:18.482+08:002018-06-15T17:16:18.482+08:00I got 25/25; I got into Second Round.I got 25/25; I got into Second Round.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-74505120913580621782018-06-15T16:31:02.157+08:002018-06-15T16:31:02.157+08:00is 10-11 enough for bronze?
is 10-11 enough for bronze?<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-58153156282208316572018-06-14T18:26:35.382+08:002018-06-14T18:26:35.382+08:00Yes I think the list only contains of Sec 1sYes I think the list only contains of Sec 1sAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-30828336890617218222018-06-14T09:58:23.228+08:002018-06-14T09:58:23.228+08:00Results out at SMS website:
Junior http://sms.mat...Results out at SMS website:<br /><br />Junior http://sms.math.nus.edu.sg/Competitions/SMO2018/R2Junior-2018.pdf<br /><br />Senior http://sms.math.nus.edu.sg/Competitions/SMO2018/R2Senior-2018.pdf<br /><br />Open http://sms.math.nus.edu.sg/Competitions/SMO2018/R2Open-2018.pdf<br /><br />Good lucks to all...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-79223944743460800552018-06-13T13:02:22.446+08:002018-06-13T13:02:22.446+08:00Do u have senior and open listsDo u have senior and open listsAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-68823743333456044452018-06-13T10:17:17.398+08:002018-06-13T10:17:17.398+08:00Does the list provided only contain of Sec 1s?Does the list provided only contain of Sec 1s?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-4143350688959436482018-06-12T19:13:25.706+08:002018-06-12T19:13:25.706+08:00Top 10% in R2 so ~2300 pplTop 10% in R2 so ~2300 pplAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-18899319571745268452018-06-12T17:58:10.631+08:002018-06-12T17:58:10.631+08:00Any idea how many people participated? I wanna kno...Any idea how many people participated? I wanna know what is the percentage cutoff for round 2 participants.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-6241972711325960321.post-90320691155528701232018-06-12T14:27:38.995+08:002018-06-12T14:27:38.995+08:00https://goo.gl/zh9jf4
R2 list for your reference ...https://goo.gl/zh9jf4<br /><br />R2 list for your reference (I suppose there are no inaccuracies)<br /><br />Cutoff this year should have been 16 - I'm the 16/25 boy (refer to comment on 11 June at 2203) and I know people with 15/25 who are not in R2Anonymousnoreply@blogger.com