4 *2/2*1
4 + 1 - 2 = 3
If the digits are repeatable, the answer is 4*4*4*4. If the numbers cannot be repeated, then it is 4*3*2*1.
(9+ 4- 1 ) *2
(7 + 1 - 2) x 4
256!
(4 + 3) * (2 - 1)
(2 + 9) x 4 - 1 = 43
(1+3+4) * 2 = 16
(4! + 2 + 3) x 1 [For those who do not know, 4! = 10]
106------------------------------------------------------------------------------------------------From Rafaelrz.You can make, 4P3 = 4!/(4-3)! = 24, different 3 digit numbers using 1, 2, 3 and 4.
The numbers are 1, 2, 4.
5-4 = 1 1 x 2 = 2 2 + 3 =5