tag:blogger.com,1999:blog-2893315201359920156.post1599567874876387046..comments2023-10-28T20:35:12.856+05:30Comments on Best Brain Teasers: 22marchlaveshhttp://www.blogger.com/profile/03731980294342074301noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-2893315201359920156.post-33290497134235736802011-03-23T11:06:27.524+05:302011-03-23T11:06:27.524+05:30reverse both the sand glasses at a time, so that w...reverse both the sand glasses at a time, so that we get 3 mins.if we do this for 3 times we get 3+3+3=9Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2893315201359920156.post-66856639860125619882011-03-22T23:45:17.322+05:302011-03-22T23:45:17.322+05:30take 7 & 4 do both now when we hav claculate...take 7 & 4 do both now when we hav claculated 4 mins we hav 3 mins remaning in 7 one now reverse both after 3 mins we hav 1 min remaining in 4th one now reverse 1 mins so we hav 5mins now add 4mins to it !!!!!!!!!!!!!!!!!!!!!!!arpit bhatnagarhttp://www.kampusattack.comnoreply@blogger.comtag:blogger.com,1999:blog-2893315201359920156.post-27258257371765777272011-03-22T19:29:16.814+05:302011-03-22T19:29:16.814+05:30first start both 7 and 4 hour glasses(hg) after 4 ...first start both 7 and 4 hour glasses(hg) after 4 mins 4hg will be emptyand time is 4m<br />again reverse 4 hg after 3m 7hg is empty time is 4+3=7m<br />in reversed 4hg 1m sand is left also reverse 7 hg after 1m 4hg will get empty time is 7+1=8m and rev 7 hg as it has 1m sand revd for 9thmin 7<br />hence calculated 9 minsUnknownhttps://www.blogger.com/profile/05357381205588230113noreply@blogger.comtag:blogger.com,1999:blog-2893315201359920156.post-47520067777078709362011-03-22T15:56:11.837+05:302011-03-22T15:56:11.837+05:30If you can wait 16 minutes then
start 7 & 4 ,...If you can wait 16 minutes then <br />start 7 & 4 , reversing 4 when it is over.<br />When 7 gets over, 4 will have one minute sand left.<br />Use that plus twice 4 to get 9 minutes.<br />Will be interesting to see it done in less time:-)Anonymousnoreply@blogger.com