To process a workpiece 10 operations are interchangeable intheir order. The
economic-technological evaluation of each variant lasts 1h. Howlong would the overall rating take to find the optimal machinelayout?
How many Morse alphabet characters can be formed when acharacter is out
a) exactly five elements b) should consist of at most fiveelements?
In the vicinity of a resort 15 hiking trails are to be marked bytwo colored, parallel lines.
How many colors do you need at least if the same color pairs areallowed and the arrangement of the lines does not matter?
