all 4s are single, u have to use all 4s but each one time only. U can use any time of arithemetical calculation to find out the answer.
2007-07-29 21:30:35 · 12 answers · asked by smart123 1 in Science & Mathematics ➔ Mathematics
(4 / .4) + (4 / .4)
There you have it. An expression that uses four 4s, and no other digits, to add up to 20.
2007-07-29 21:32:59 · answer #1 · answered by Anonymous · 1⤊ 0⤋
4 x (4 + 4/4) = 20
2007-07-30 05:09:40 · answer #2 · answered by bilbo 3 · 4⤊ 0⤋
4! - 4 + 4 - 4
= 4*3*2*1 - 4 + 4 - 4
= 24 - 4 + 4 - 4
= 20
2007-07-30 04:42:56 · answer #3 · answered by derrick_online2030 2 · 3⤊ 0⤋
4+4+4+4+(magic 4)=20
2007-07-30 11:17:22 · answer #4 · answered by All The Answers 2 · 0⤊ 0⤋
Well, quite simple.
4 + 4 =8, then add another 4 which is 12, + 4 = 16 then the last +4 = [20]
2007-07-30 04:41:44 · answer #5 · answered by Jeremy Ok 1 · 0⤊ 2⤋
(4! x 4)/4 - 4 = 20
(4 x 4) + sqrt(4 x 4) = 20
(4 x 4 + 4) mod (4!) = 20
2007-07-30 05:25:07 · answer #6 · answered by ideaquest 7 · 0⤊ 0⤋
Hey there!
Here are some of the ways to prove it.
4!*4/4-4=20
4(4+4/4)=20
(4/0.4)+(4/0.4)=20
Hope it helps!
2007-07-30 11:57:10 · answer #7 · answered by ? 6 · 0⤊ 0⤋
4 x 4 + 4 + 4 x0 = 20
2007-07-30 04:47:40 · answer #8 · answered by sagarukin 4 · 0⤊ 4⤋
4+4=8+4+4=16+4(in total)=20!!!!!!!
2007-07-30 04:34:57 · answer #9 · answered by Anonymous · 1⤊ 3⤋
(4*4)+4=20
(16)+4=20
16+4=20
20=20
LHS=RHS
verified
2007-07-30 10:01:53 · answer #10 · answered by anji 1 · 0⤊ 0⤋