Question
1. a square has a side of 2 decimeters. a new square is formed by joining the midpoints of the sides. If this procedure is reoeated 6 times, what is the perimetet and area of the seventh square
2. find the sum of those numbers between 15 and 810 which have 8 as their units digit
3. in an arithmetic sequence, the sixth term is twice the 3rd term and the 30th term is 60. find the common difference?
2. find the sum of those numbers between 15 and 810 which have 8 as their units digit
3. in an arithmetic sequence, the sixth term is twice the 3rd term and the 30th term is 60. find the common difference?