21.general, the smaller the price elasticity:

the smaller the responsiveness of price to changes in quantity.

the smaller the responsiveness of quantity to changes in price.

the larger the responsiveness of price to changes in quantity.

the larger the responsiveness of quantity to changes in price.

22.If MR

increase production

decrease production

keep the prices constant

keep the production level constant

23.If computers are normal goods, a fall in income will

Increase the demand for cars

Decrease the demand for cars

Have no effect on the demand for cars

None of the above

24.If a decrease in the price of a good decreases the total revenue, the demand for the good is

price elastic

price inelastic

income elastic

income inelastic