The first term of a geometric series is 15 times larger than the common ratio and the sum to infinity is 5. 45 Find the 6th term of the series. All working must be shown. Question A5 Write the expression 1 3 log264+ log225-3 log 10 in its simplest form which must contain no logarithms. All working must be shown: just quoting the answer, even the correct one, without any working will score no marks.