plzz answer this question of AP
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If first and last term of AP is 1 and 11 then,
a = 1 and L = 11
Also given that sum of the terms is 36 = Sₙ
We have to find n
Sₙ = [n(a+L)]/2
36 = [n(1+11)]/2
36 * 2 = 12n
72 = 12n
Therefore, n = 72/12 = 6
So number of terms are 6
Answer:- n = 6
a = 1 and L = 11
Also given that sum of the terms is 36 = Sₙ
We have to find n
Sₙ = [n(a+L)]/2
36 = [n(1+11)]/2
36 * 2 = 12n
72 = 12n
Therefore, n = 72/12 = 6
So number of terms are 6
Answer:- n = 6
MayankTamakuwala1296:
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