Multiplication and division of integral in simple mathematical operation 1： 1 + 1 / 3 + 1 / 3 & sup2; + +1 / 3 to the 10th power =) 2： Sn = 1 / 2 + 2 / 4 + 3 / 8 + 4 / 16 + +The n-th power of 11 / 2 is compared with the size of 2 (process that needs SN to calculate)

Multiplication and division of integral in simple mathematical operation 1： 1 + 1 / 3 + 1 / 3 & sup2; + +1 / 3 to the 10th power =) 2： Sn = 1 / 2 + 2 / 4 + 3 / 8 + 4 / 16 + +The n-th power of 11 / 2 is compared with the size of 2 (process that needs SN to calculate)

One question:
Let s = 1 + 1 / 3 + 1 / 3 & sup2; + +1 / 3 to the 10th power
Then: S / 3 = 1 / 3 + 1 / 3 & sup2; + +1 / 3 to the 10th power + 1 / 3 to the 11th power
By subtracting the two formulas, we get the following result:
2S / 3 = the 11th power of 1-1 / 3
So: S = 3 (the 11th power of 1-1 / 3) / 2
Is there any mistake in question 2