Ilja Fong's answer to Adranaline's Junior College 1 H2 Maths Singapore question.
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You should be able to figure out the common ratio is 5/4 in part i and the common difference is 2 in part ii. Then use the GC to solve which would give an n value of 22.327 and then you round up to 23.
Date Posted:
1 year ago
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