Math, asked by sheikhsultan494, 11 hours ago

give me the answer of all question​

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Answered by amannscharlie
2
  • refer your previous question I have answered all
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Answered by 786558
2

Answer:

4. sn = n/2(2a+(n-1)d)

=13/2(20+36)

= 13/2(56)

= 13*28

= 364

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