Please help me with my math question on volume: prisms and pyramids

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Choose a second initial value that is 0.01 greater than the initial value from question 9. iterate it using the function, f, ten times. if necessary, you can round your results to the nearest ten-thousandth.

What is the base of 1/9 to the power of 2