Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction b
grains on the third square,
A chessboard has 64 squares. George places 1 grain of rice on the first square, 2 grains on the second square
8 grains on the fourth square, and so on, until he has placed grains of rice on 10 squares.
Once George has put rice on the 10th square, he has placed a total of
grains of rice on the chess board.