Math, asked by sagarmohite753, 5 months ago

Find the sum of first seven terms of an AP whose first term is 5 and seventh term is 23.

Answers

Answered by Anonymous

5

Step-by-step explanation:

s7=n/2(a7-a1)

=7/2(23-5)

7/2(18)

9×7

63

mark as brilliant thanks for all question

Answered by goodhuman80

2

Step-by-step explanation:

Sn = n/2 (a+l)

= 3.5(28)

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