For this fraction, you would have to see how many times 7 goes into 47. So, 6 times as 7 times 6 is 42. Subtract 42 from 47, and this would be your remainder:
6
I think it is just rotations. When I look at is I group the three together and those three are the ones being rotated.
Hope this helps :)))
This series converges.



Both component series are geometric with ratios less than 1, so they both converge.


So we have

In the X1 and X2 is the same number because a negative number X negative number your result always be a positive number
None because 15 is smaller than 16 and 16 is the biggest