Trisaba
  • Trisaba
How do you get 23 25 27 and 29 in 4 4s no more no less
Mathematics
katieb
  • katieb
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Trisaba
  • Trisaba
im new
Trisaba
  • Trisaba
i will give medals
Trisaba
  • Trisaba

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dan815
  • dan815
what do yo mean in 4 4s?
Trisaba
  • Trisaba
four fours like the way to get 16 is \[4+4+4+4\]
dan815
  • dan815
ah okay so divide each of those numbers by 5
dan815
  • dan815
by 4*
dan815
  • dan815
23/4 you can rewrite 23 as 20+3 (20+3)/4 =20/4 + 3/4 = 5+3/4 so each of the part will be 5 and 3/4th
Trisaba
  • Trisaba
?
dan815
  • dan815
it doesnt make sense?
dan815
  • dan815
okay for example you want to split 16 into 4 4s right
Trisaba
  • Trisaba
yeah
dan815
  • dan815
|dw:1439936653692:dw|
dan815
  • dan815
16/4+16/4+16/4+16/4=16 does this make sense
dan815
  • dan815
you added a quarter of 16s 4 times so it will be 16
Trisaba
  • Trisaba
oh ok
dan815
  • dan815
1/4 of 16 was added 4 times and u simplied that 1/4th of 16 to 4 since 16/4=4
dan815
  • dan815
now we do the same thing with each number and write it in simplified form
Trisaba
  • Trisaba
i can only use the number 4
dan815
  • dan815
|dw:1439936765478:dw|
dan815
  • dan815
wait what lol
dan815
  • dan815
you can only use the number 4?
Trisaba
  • Trisaba
i need to find 23 by using only 4 4s and operations
dan815
  • dan815
ahh lol now the question is clear okay
dan815
  • dan815
|dw:1439937238061:dw|
Trisaba
  • Trisaba
what is !
dan815
  • dan815
that is sign for factorial 4! = 4*3*2*1
Trisaba
  • Trisaba
then factorial isn't ok
dan815
  • dan815
okay did they give u a list of operators that are okay to use
Trisaba
  • Trisaba
my computer is glitching sorry they gave me \[\div \times -+\sqrt{4} 4^{2}\] that is it
dan815
  • dan815
kk
Trisaba
  • Trisaba
4 squared and sqrt of 4 count as one 4
dan815
  • dan815
yea
Trisaba
  • Trisaba
what do you have in mind i think it should start with \[4^{2}\]
dan815
  • dan815
can u see how to hit 7 with 3 4s
dan815
  • dan815
thats what im trying to do still
Trisaba
  • Trisaba
no that is what i tried
dan815
  • dan815
i think we should make a list this is looking more difficult than i thought
dan815
  • dan815
lets make a list of all the numbers we can get with 1 4 then with 2 4s and so on
Trisaba
  • Trisaba
me two
Trisaba
  • Trisaba
one 4 is 2, 4, and 16
dan815
  • dan815
we can stack operators ther actually a lore more
dan815
  • dan815
(4^2)^2
Trisaba
  • Trisaba
cant do that
dan815
  • dan815
i thought squaring operation is allowed
Trisaba
  • Trisaba
yeah bot not stacked
Trisaba
  • Trisaba
\[4^{2}\] is the only thing we can do with it no altering in any way
dan815
  • dan815
what about embeded square is that allowed
dan815
  • dan815
|dw:1439938669932:dw|
Trisaba
  • Trisaba
and cant use two fours to make 44 'cause then \[(44+\sqrt{4})\div \sqrt{4}\] would be the answer and no
dan815
  • dan815
ok
dan815
  • dan815
lets do 2,4s then
Trisaba
  • Trisaba
two 4 is 0, 2, 4, 6, 12, 14, 18, 20
Trisaba
  • Trisaba
oh and 1
Trisaba
  • Trisaba
and 8 that is it
dan815
  • dan815
and 32 and 64 too
Trisaba
  • Trisaba
how 64
Trisaba
  • Trisaba
i got 32
dan815
  • dan815
4^2*4
Trisaba
  • Trisaba
oh
Trisaba
  • Trisaba
16
dan815
  • dan815
is 4^-2 allower
Trisaba
  • Trisaba
no just \[4^{2}\] no altering in any way
Trisaba
  • Trisaba
no way we can make seven in three 4s
Trisaba
  • Trisaba
lets put ideas together
dan815
  • dan815
sqrt(4) is plus or minus 2
dan815
  • dan815
im giving up -.-
Trisaba
  • Trisaba
we use it as the positive root
Trisaba
  • Trisaba
:(
dan815
  • dan815
thehyh arent giving me enough freedom wiht operations..
dan815
  • dan815
what about .4
Trisaba
  • Trisaba
no
Trisaba
  • Trisaba
me and my classmates think they should link
dan815
  • dan815
look even this one lets u use 44s and factorials https://www.mathsisfun.com/puzzles/four-fours-solution.html
Trisaba
  • Trisaba
i know but my teacher wont let me
dan815
  • dan815
what country are you inÉ
Trisaba
  • Trisaba
USA
dan815
  • dan815
mhm
Trisaba
  • Trisaba
MHM?
dan815
  • dan815
:)
dan815
  • dan815
i wanna see how ur teacher did it
Trisaba
  • Trisaba
he didnt tell us do tommorow
Trisaba
  • Trisaba
due typo

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