Question

how do we country various goods and service and know the total production in each sector​

Answer 1

Answer:

the central government[the finance ministry] collects data with the help of various other governments like state government and tell the GDP of the country[or total production]

Answer 2

Answer:

Thousands of goods and servicesare produced it is an enormous task to add up all these. To get to this problem economists suggested that the value of goods and services should be used rather than adding the actual numbers.

But only one precaution is to be undertaken i.e., only the final value of goods and services should be counted as it already includes the value of all intermediate goods.

hope this will help you ☺️☺️☺️