In each of these puzzles, you are given a number that you must construct out of several other numbers.

You do this by taking the numbers and performing addition, subtraction, multiplication, and/or division operations on them.

Each number must be used in the calculations exactly once, and only these four operations listed may be used.

You may parenthesize your expression however you wish. For example, 5 may be obtained from 1, 2, and 3, with the expression (3 + 2) × 1.

Question 1

Make 42 out of 2, 3, 4, and 9.

5/9/2008 12:04:27 AM

(9x4)+(2x3)

Question 2
Make 4 out of 2, 5, 6, and 8

[Edited on May 9, 2008 at 12:07 AM. Reason : amirite]

5/9/2008 12:06:59 AM

haha yea i was getting to it my cat hit the power button on my surge protector

5/9/2008 12:11:07 AM

(6+8)-(2*5)=4

5/9/2008 12:16:19 AM

okaaay another competitor. don't cheat now, that's no fun



qntmfred - 1
d7freestyler - 1

Question 3
Make 40 out of 4, 6, 8, and 8.

5/9/2008 12:19:11 AM

(4*6)+(8+8)=40

5/9/2008 12:21:11 AM

yup!

qntmfred - 1
d7freestyler - 2

Question 4
Make 17 out of 1, 2, 6, and 7.

5/9/2008 12:24:16 AM

(6-1)×2+7

5/9/2008 12:25:38 AM

nicely done!

5/9/2008 12:27:06 AM

you aren't cheating now are you qntmfred?

qntmfred - 2
d7freestyler - 2

Question 5

Make 31 out of 1, 2, 6, and 7.

5/9/2008 12:27:10 AM

V that was baaaaaaaaaad

[Edited on May 9, 2008 at 12:30 AM. Reason : math = fail at 1230am]

5/9/2008 12:27:51 AM

^ erm? check that math

5/9/2008 12:28:47 AM

((7-2)*6)+1

5/9/2008 12:30:00 AM

yep! some of these might have multiple answers

qntmfred - 2
d7freestyler - 2
wawebste - 1


Question 6
Make 32 out of 1, 2, 6, and 7.

5/9/2008 12:32:16 AM

goddamn



[Edited on May 9, 2008 at 12:34 AM. Reason : i need to just quit]

5/9/2008 12:33:19 AM

nvrmd

[Edited on May 9, 2008 at 12:37 AM. Reason : ]

5/9/2008 12:36:47 AM

((6-2)!+7)+1

[Edited on May 9, 2008 at 12:37 AM. Reason : + instead of *]

5/9/2008 12:37:17 AM

^damn!

i didn't know you could use factorials!

[Edited on May 9, 2008 at 12:39 AM. Reason : nice]

5/9/2008 12:37:57 AM

only +, -, /, x allowed

5/9/2008 12:39:02 AM

4x8

5/9/2008 12:39:41 AM

my bad, jumped in without reading the first post

5/9/2008 12:40:01 AM

hint: these are each used once '+', '-', 'x'.

5/9/2008 12:40:14 AM

^^^ so yeah, (6-2)*(7+1)

[Edited on May 9, 2008 at 12:41 AM. Reason : qntm]

5/9/2008 12:40:38 AM

d7freestyler gets it with the full equation

qntmfred - 2
d7freestyler - 3
wawebste - 1

Question 7
Make 33 out of 1, 2, 6, and 7.

5/9/2008 12:41:40 AM

i'm the reigning speed multiplication tables champion of the 3rd grade so y'all might as well give up now

[Edited on May 9, 2008 at 12:42 AM. Reason : d7 got it from me, kthx]

5/9/2008 12:42:11 AM

haha sorry qntfred, gonna need the full equation for a correct answer

5/9/2008 12:43:33 AM

5x7-2
(6-1)x7-2

[Edited on May 9, 2008 at 12:44 AM. Reason : i think it was pretty obvious i had it. i was just showing the intermediate train of thought]

5/9/2008 12:44:30 AM

((6-1)*7)-2

^one min., nice

[Edited on May 9, 2008 at 12:46 AM. Reason : ]

5/9/2008 12:45:34 AM

that's the way

qntmfred - 3
d7freestyler - 3
wawebste - 1

Question 8
Make 34 out of 1, 2, 6, and 7.

(this is the last one with these four numbers, heh)

5/9/2008 12:46:07 AM

((7-1)*6)-2

5/9/2008 12:46:56 AM

ha, i had that one figured out on 33. i knew it was coming next >.<

5/9/2008 12:47:58 AM

dammit

[Edited on May 9, 2008 at 12:48 AM. Reason : ]

5/9/2008 12:48:20 AM

qntmfred - 3
d7freestyler - 3
wawebste - 2

Question 9
Make 43 out of 2, 5, 7, and 8.

5/9/2008 12:48:40 AM

50-7
10x5-7
(8+2)x5-7

[Edited on May 9, 2008 at 12:50 AM. Reason : winnar is yuo]

5/9/2008 12:49:54 AM

((8+2)*5)-7

^damnit, again

[Edited on May 9, 2008 at 12:51 AM. Reason : ]

5/9/2008 12:50:25 AM

okay i'll give it to you qntmfred, but next time you have to state the expression using the four numbers given.

qntmfred - 4
d7freestyler - 3
wawebste - 2

Question 10
Make 17 out of 1, 3, 3, and 6.

[Edited on May 9, 2008 at 12:52 AM. Reason : edit]

5/9/2008 12:51:49 AM

(3x6)-(1^3)

[Edited on May 9, 2008 at 12:54 AM. Reason : nevermind, didn't read the first post either]

5/9/2008 12:53:51 AM

(6-(1/3))*3

[Edited on May 9, 2008 at 12:55 AM. Reason : tricky]

5/9/2008 12:54:42 AM

nice

5/9/2008 12:55:03 AM

Yeah, I already confessed I missed that dude.

[Edited on May 9, 2008 at 12:56 AM. Reason : .]

5/9/2008 12:55:50 AM

^again, only '+', '-', '/', and 'x' may be used. no ^, !, square roots, etc.

5/9/2008 12:56:05 AM

he doesn't.

^haha, weak.



[Edited on May 9, 2008 at 12:57 AM. Reason : dfs]

5/9/2008 12:56:34 AM

good job qntmfred!

qntmfred - 5
d7freestyler - 3
wawebste - 2

Question 11
Make 80 out of 1, 3, 6, and 9.

5/9/2008 12:57:28 AM

(6+3)*9-1

5/9/2008 12:57:58 AM

easy peasy

9x(6+3)-1

[Edited on May 9, 2008 at 12:58 AM. Reason : haha tied]

5/9/2008 12:57:58 AM

((6+3)*9)-1

5/9/2008 12:58:24 AM

sorry cddweller, i'm just too slow i guess, plus its out there for newcomers

5/9/2008 12:58:35 AM

Yeah, I refreshed the page too late too.

5/9/2008 12:58:57 AM

qntmfred - 5
d7freestyler - 3
wawebste - 3

Question 12
Make 110 out of 1, 2, 7, and 8.

btw whatup snuwpack

[Edited on May 9, 2008 at 1:00 AM. Reason : .]

5/9/2008 12:59:36 AM

(7x8-1)x2

[Edited on May 9, 2008 at 1:00 AM. Reason : that's it for me i gotta go to bed]

5/9/2008 1:00:09 AM