Harder Mathematical Problems
Troubling Twenty-Four ★★★
With the digits 1, 4, 5 and 6, you must make 24, using the following rules:
- each digit must be used exactly once;
- the allowed operations are addition, subtraction, multiplication, and division (note: exponentiation is therefore not allowed!);
- digits may not be concatenated (so, for example, it is not allowed to use 1 and 4 as 14);
- brackets are allowed.
The question: Give the two solutions to this problem.
The answer: Click here!