How many different numbers can you make if you use the digits 1, 2, 3, 4 once each, in any order, and a times sign. For instance 31x24, or 2x413.
36
abcd can be shown in 2*3*4=24 different ways a*bcd, ab*cd, abc*d- 3 ways of times sign each, then 24*3=72 total ways half of them will be repeat as ab*cd or cd*ab so 72/2=36 is the answer
How many different positive numbers (integers) can you make using each of the digits 1, 2, 3, 4, once only, and a take away sign?
Example 31-24, or 413-2
How many different numbers can be made using only the digits 1, 2, 3, 4 and a + sign? For instance 31+24, or 1+243.
Using 1, 2, 3, 4 & 5 in any order and the operators + - % * each exactly once what is the greatest possible value that you can make?
