![]() |
which number best completes the sequence 1 1 3 2 4 6 5 25 - Printable Version +- MacResource (https://forums.macresource.com) +-- Forum: My Category (https://forums.macresource.com/forumdisplay.php?fid=1) +--- Forum: Tips and Deals (https://forums.macresource.com/forumdisplay.php?fid=3) +--- Thread: which number best completes the sequence 1 1 3 2 4 6 5 25 (/showthread.php?tid=25063) |
Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - Carm - 12-29-2006 First 1 3x3=9-5=4+1=5*5=25-5=20+1=21*21=441-5=436 Start with 3,square, subtract 5, add 1, repeat Second 2+4=6-2=3+5=8-2=6+6=12-2=10 +x , -2, +(x+1), -2, +(x+2), -2,+(x+3), -2 x=4 Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - Carm - 12-29-2006 Ken Sp. If you dont mind, what is this for? Carm Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - Carthaigh - 12-29-2006 9 Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - Ken Sp. - 12-29-2006 Carm--choices on number 2 were 2, 15, 18, 32, 28? A good friend took this test yesterday, and he knows l like these things so he forwarded some to me--and I was stumped on these 3. It may be due to the late hour--and at 50 years old--it has been awhile since I have done these. Thanks again so much...Once I see your sequence--I kick myself--since it is now so clear :-) Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - Racer X - 12-29-2006 bleem. it is the number between 6 and 7. Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - mikebw - 12-29-2006 [quote Carm] Second 2+4=6-2=3+5=8-2=6+6=12-2=10 +x , -2, +(x+1), -2, +(x+2), -2,+(x+3), -2 x=4 Pretty sure that 6-2 =4. Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - mikebw - 12-29-2006 2 6 3 8 6 12 Plus 4, minus 3, plus 5, minus 2, plus 6, minus 1? Just increase the number to be added by 1 every time, and decrease the number to be subtracted every time. And what to do after you get to 11... That doesn't give a number from your '2, 15, 18, 32, 28' list of choices either. Hmm. Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - Carm - 12-29-2006 Yeah, I messed up when I was working the problem ![]() Cant get the second one though. 2 6 3 8 6 12 2+4=6-3=3+5=8-2=6+6=12-1=11 +4, -3,+5, -2,+6, -1 <-is this last number right? ¿Possible answers: 2, 15, 18, 32, 28¿ EDIT: mikebw. Looking at the problem. Its adding positive one to both the negative and positive number. So after 11 it would be 18 2+4=6-3=3+5=8-2=6+6=12-1=11+7=18 +4,-3,+5,-2,+6,-1,+7,0,+8,+1 +4+1=5 -3+1=-2 Carm Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - mikebw - 12-29-2006 ahh, but we still can't get 18 to follow 12 immediately. Perhaps Ken Sp. forgot to include the 11 in his sequence? Re: which number best completes the sequence 1 1 3 2 4 6 5 25 - estnyc - 12-29-2006 This was a celebrated question from where I once went to school: 14, 18, 23, 28, 34, 42, 50, 59, 66, 72, 79, 86, ?, ?, ?, ? |