Difference between non professional and semi professional human resources

The difference between non professional and semi professional human resources are as follows,

Step-by-step explanation:

non professional human resources are that group of people who have not attended any skills such as sweeper,etc.

semi professional human resources are that group of people who have attended skills and training but haven't experienced in any sector such as assistant pilot , assistant engineer, etc

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.