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A chessboard has 64 squares. George places 1 grain of rice on the first square, 2 grains on the second square, 4 grains on the third square, 8 grains on the fourth square, and so on, until he has placed
answered
Jun 13, 2017
Mathematics
high-school
5
votes
113k
views
In which category do Puritans belong? a. Protestants b. Presbyterians c. reformed Catholics d. reformed Lutherans
answered
Jan 8, 2017
English
high-school
4
votes
11.3k
views
How many vertices has octagon have?
answered
Jun 30, 2016
Mathematics
middle-school
0
votes
203k
views
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