find the sum of an ap 3,7,11,...,up to 13 term i asked till 13 term
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A.P = 3, 7, 11,….
a = 3
d = 7 - 3 = 4
n = 13
Sₙ = ?
Sₙ = a + (n - 1)d
Sₙ = 3 + (13 - 1) x 4
Sₙ = 3 + 12 x 4
Sₙ = 3 + 48
Sₙ = 51
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a = 3
d = 7 - 3 = 4
n = 13
Sₙ = ?
Sₙ = a + (n - 1)d
Sₙ = 3 + (13 - 1) x 4
Sₙ = 3 + 12 x 4
Sₙ = 3 + 48
Sₙ = 51
Hope it helps you
Mark me as a brainlist please ❤️
Bye ☺️
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