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A building company employs
3 labourers
12 joiners
8 electricians
4 plumbers
For a job, the company needs one of each type of worker.
a)In how many ways can the company choose the 4 workers?
b)One labourer and 3 joiners are on holiday.
How many ways can the company now choose the four workers?

A building company employs 3 labourers 12 joiners 8 electricians 4 plumbers For a job the company needs one of each type of worker aIn how many ways can the com class=

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