(i) Rent-free house to an employee by an employer: No, it is not included in the estimation of a country's National Income. It is considered a non-monetary benefit and is not counted in the National Income calculation.
(ii) Purchases by foreign tourists: Yes, it is included in the estimation of a country's National Income. These purchases generate revenue for local businesses and are considered a part of the country's gross domestic product which is a key component of the National Income calculation.
(iii) Purchase of a truck to carry goods by a production unit: Yes, it is included in the estimation of a country's National Income. This transaction represents investment in capital goods, which adds value to the production process and contributes to the country's economic output.
