Hi all, ps help. Many this and God Bless:)
Observe the patterns:
Pattern A Pattern B
(a) Write down the 7th line of the Pattern A
(b) Deduce the 8th line of the Pattern B
Sequence C is given as: 9, 89, 889, ….
Sequence D is given as: 1, 11, 111, ….
Sequence E has the following rule
nth term of Sequence E = nth term of Sequence C + nth term of Sequence D
(c) Write the nth term of Sequence E as a power of 10
(d) Hence find the sum of the first 9 terms of Sequene E.