You can add, subtract, multiply, divide or use powers eg 4 to the power of 4. I have got every number up to 20 except 19. You can also stick digits together e.g 44 or 444.
2007-11-16 02:21:13 · 8 answers · asked by me9189 2 in Science & Mathematics ➔ Mathematics
You can only use 4 lots of the number 4.
2007-11-16 02:26:26 · update #1
4x4 is 16.
2007-11-16 02:28:03 · update #2
Thanks Narky, you worked it out first.
2007-11-16 02:33:38 · update #3
and thx cmadame for explaining it
2007-11-16 02:34:23 · update #4
4! - 4 - 4/4 = 24 - 4 - 1 = 19
2007-11-22 03:05:30 · answer #1 · answered by Como 7 · 1⤊ 0⤋
19 = 4! − 4 − 4 ÷ 4
2007-11-16 02:28:18 · answer #2 · answered by Narky 5 · 4⤊ 4⤋
Answer by Big Head uses 5 fours and so does sahsjing.
To get 19 you have to use factorial (you don`t mention if you can) . Factorial is denoted by ! and means you multiply a number by all the integers that are less than or equal to it until you get to 1
So 4!=4*3*2*1=24
If you use this 19=4!-4-(4/4).
2007-11-16 02:30:11 · answer #3 · answered by cmadame 3 · 4⤊ 2⤋
You could do 4 squared +4 - (4/4)
2007-11-17 04:21:46 · answer #4 · answered by sweet_angel92 3 · 1⤊ 2⤋
4 X 4 = 16
+ 4 =20
SUBTRACT 4/4 [4 divided by 4] =1
20 -1 =19
2007-11-16 02:25:13 · answer #5 · answered by ORC 3 · 3⤊ 6⤋
I think it is not possible.
4x4+4-4/4
4x(4+4/4)-4/4
2007-11-16 03:13:09 · answer #6 · answered by athul e 2 · 0⤊ 2⤋
It is possible. But you won't get exactly 19, very close to 19.
4 to the power 2.12396376
Try using a calculator and verify this yourself.
2007-11-16 02:37:44 · answer #7 · answered by cidyah 7 · 1⤊ 3⤋
You can use integer function.
-int[4 - 4*4ln4] = 19
You can check my answer with any calculator with integer function.
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I don't think 4! is a good choice, since it actually involves 4*3*2*1.
2007-11-16 02:29:53 · answer #8 · answered by sahsjing 7 · 2⤊ 4⤋