Tiesto Posted August 5, 2005 Report Share Posted August 5, 2005 (edited) A friend of mine had a math test today and she told me about one of the questions... I want you to help me on this:What is the next number of the list?7 12 6 15 12 ...a 2b 4c 6d 8e 12 Edited August 7, 2005 by Tiesto Quote Link to comment Share on other sites More sharing options...
Haybrd Posted August 5, 2005 Report Share Posted August 5, 2005 The answer is.......4How:7,12,6,15,2,____Take the first number (7) and times by 2 and minus 2. This equals the second number in the sequence i.e. (7*2)-2=12Take the third number (6) and times by 3 and minus 3. This equals the forth number in the sequence i.e. (6*3)-3=15The pattern is now appearing of times/minus going up by 1 soTake the fifth number (2) and times by 4 and minus 4 i.e (2*4)-4=4so 4 is the answer. Quote Link to comment Share on other sites More sharing options...
veezhun Posted August 5, 2005 Report Share Posted August 5, 2005 The answer is.......4How:7,12,6,15,2,____←the last number is 12 not 2 so the answer is wrong.tiesto, am still working on it.. brain not functioning Quote Link to comment Share on other sites More sharing options...
MZ-NH1 Posted August 5, 2005 Report Share Posted August 5, 2005 I only so standard maths @ school so I wouldn't be able to help 1 bit Quote Link to comment Share on other sites More sharing options...
tartan Posted August 6, 2005 Report Share Posted August 6, 2005 (edited) its 4412 times 4 minus 4 Edited August 7, 2005 by tartan Quote Link to comment Share on other sites More sharing options...
bug80 Posted August 6, 2005 Report Share Posted August 6, 2005 its 4512 times 4 minus 4←That is not one of the possible answers Quote Link to comment Share on other sites More sharing options...
bland10000 Posted August 6, 2005 Report Share Posted August 6, 2005 c) 8 for a total of 967x12=84, 6x15=90, 12x8=96 Quote Link to comment Share on other sites More sharing options...
bug80 Posted August 6, 2005 Report Share Posted August 6, 2005 c) 8 for a total of 967x12=84, 6x15=90, 12x8=96←That could very well be the solution! Quote Link to comment Share on other sites More sharing options...
Tiesto Posted August 6, 2005 Author Report Share Posted August 6, 2005 c) 8 for a total of 967x12=84, 6x15=90, 12x8=96←hmmmm ...yup that must be it and think that I was about to read all over again my integral calculus books to find an answer sometimes the simple is the solution, well done bland10000. Thanks everyone for the help Quote Link to comment Share on other sites More sharing options...
Bananatree Posted August 6, 2005 Report Share Posted August 6, 2005 That could very well be the solution!←It doesn't matter, in situations like multiple choice exams, if you can prove that an answer works, it is automatically right. As long as your teacher is not a facist. Quote Link to comment Share on other sites More sharing options...
Tiesto Posted August 7, 2005 Author Report Share Posted August 7, 2005 It doesn't matter, in situations like multiple choice exams, if you can prove that an answer works, it is automatically right. As long as your teacher is not a facist.← Quote Link to comment Share on other sites More sharing options...
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