Asked by Zainab hamza
The sum of 11 term of an arictiment progratiom is 891 find the 28 and 45 is terms of commion diffrest is 15
Answers
Answered by
oobleck
11/2 (2a+10*15) = 891
solve for a, and then
a28 = a+27d
a45 = a+44d
solve for a, and then
a28 = a+27d
a45 = a+44d
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