Assume that the number of sellers in a market increase, what will happen to the supply curve for the product, and what will happen to the price and quantity in the market ?

A change in the number of sellers in an industry changes the quantity available at each price and thus changes supply. An increase in the number of sellers supplying a good or service shifts the supply curve to the right; a reduction in the number of sellers shifts the supply curve to the left.

the telephone is the answer