In an experiment to test iron strengths three different ores

In an experiment to test iron strengths, three different ores, four different furnace temperatures, and two different cooling methods are to be considered. Altogether, how many experimental configurations are possible?

Solution

three different ores-> it means 3 options are there

four different furnace temperatures,-> 4 options are there for single ore. now we have total 12 options till this stage

and two different cooling methods now we have 2 options for above 12 option.

therefore 12*2 = 24 experimental ways we have