With the ciphers 1, 4, 5 and 6 you must make 24, using the following rules:
a Each cipher must be used exactly once.
b The allowed operations are: addition, substraction, multiplication and division.
c Ciphers may not be concatenated (so, for example, it is not allowed to use 1 and 4 as 14).
d Brackets are allowed.
Give the TWO solutions to this problem.