Răspuns:
Explicație pas cu pas:
1/2^2 = 1/2 - 1/2^2
1/2^3 = 1/2^2 - 1/2^3
1/2^4 = 1/2^3 - 1/2^4
.......
1/2^10 = 1/2^9 - 1/2^10
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1/2^2 + 1/2^3 + 1/2^4 + ...+ 1/2^10 = 1/2 - 1/2^2 + 1/2^2 - 1/2^3 + 1/2^3 - 1/2^4
+ 1/2^9 - 1/2^10 = 1/2 - 1/2^10
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1/2 - (1/2 - 1/2^10) = 1/2 - 1/2 + 1/2^10 = 1/2^10