shedan9222 shedan9222

25-01-2024
Mathematics

contestada

The sum of n terms of two arithmetic progression are in the ratio (3n+8): (7 + 15). Find the ratio of their 12th terms.
(a) 7 : 16
(b) 5 : 16
(c) 3 : 16
(d) 1 : 16

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