A- Fahd deposited an amount of 3,000 riyals with compound annual interest, at an annual rate of 8%, for a period of nine years. Find the future value of the sum.

B- Saud deposited an amount of 2562 riyals with a compound semi-annual interest of 6% annual rate for a period of five years. Find the future value of the sum.

C- A person deposits 2000 riyals at the end of each year for a period of 7 years with compound annual interest, the annual rate of which is 10%. Find the present value of these payments.