einiesh
einiesh einiesh
  • 02-10-2021
  • Mathematics
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The sum of the first terms of an AP is 520. If the 7th term is double of the 3rd term. Calculate the first term, common difference and sum of 20 terms​

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dhonalyn31
dhonalyn31 dhonalyn31
  • 02-10-2021

Answer:

hope it's help

Step-by-step explanation:

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