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gigi239
11.07.2019 •
Mathematics
Achess board has 64 squares. if you put one grain of rice on the first square, two grains on the second square, four grains on the third, eight grains on the fourth, and so on. how many grains are on the last square. no calculators.
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Ответ:
1, 2, 4, 8, ...
By considering the ratio between the first and the second, and the second and the third, we can begin to see that it has an equal ratio of 2.
Using the geometric sequence formula:
This means there will be 2^64 grains on the last square.
Ответ:
O I, II, and III only
Step-by-step explanation:
x-3 < 2
Add 3 to each side
x-3+3< 2+5
x<5
-3 is less than 5
0 is less than 5
2 is less than 5
5 is not less than 5
I , II , II are true