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To solve this, observe that a Chess board is an 8×8 square, containing 64 squares. If the amount of grains doubles on successive squares, then the sum of grains on all 64 squares is:

This equals 18,446,744,073,709,551,615 (18.4 quintillion). hope that helped XD xx

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12y ago
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14y ago

On the 1st square 1 grain (=20)

On the 2nd square 2 grains (=21)

On the 3rd square 4 grains (=22)

The sequence continues so than on the nth square there are 2(n-1) grains.

On the 64th square there are 263 grains = 9,223,372,036,854,775,808 grains

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14y ago

9223372036854775808

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Q: If you had a chessboard and on the first square you put 1 grain of rice then on the second square you doubled the amount how many would you have on the 64 square?
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