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Tema [17]
2 years ago
9

If the sum of the 8th & 9th terms of an arithmetic progression is 72 and the 4th term is -6. Find the common difference.​

Mathematics
1 answer:
bija089 [108]2 years ago
8 0

Answer:

Correct Answer: Option D

Step-by-step explanation:

9 1/3

hope that helps

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