# Finite geometric series word problems

You might need: Calculator

### Problem

Priyanka wants to recreate the story of the rice and the chessboard, but she only has a tic-tac-toe board (which has 9 squares).
If she puts 1 grain of rice on the first square of the tic-tac-toe board, 2 on the second, 4 on the third, and so on, doubling the amount for each square, how many total grains of rice will be on the board?
grains
Do 4 problems