A family wants to deposit Rs. 4,00,000 in the account of a child aged who has just started grade 11. The money is intended for his/her study. If the money is deposited with the agreement that the amount with principal and interest would be drawn after he/she passed grade 12 at the age of 19. Then, a Development Bank offers three alternatives: First offer — rate of compound interest is 19% per annum. Second offer — rate of compound interest is 18% per annum compounded semi-annually. Third offer — rate of simple interest is 20% per annum. How many times will the interest be calculated in 2 years according to the half yearly compound interest? Write.