9709 P12 - Mar 2024 - Q8 - 8 marks
10140
(a) An AP has first term 6 and tenth term 19.5. Find its first-100 sum. [4]
(b) A GP has first term 24 and ratio 1/2. Find its sum to infinity S and the sum to infinity Sā of its even-numbered terms. [4]
