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Find the 19th Term of the A.P. 7, 13, 19, 25, ............, - Algebra

Sum

Find the 19th term of the A.P. 7, 13, 19, 25, ............,

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Solution

7, 13, 19, 25...................
a = 7, n = 19, d = 13 - 7 = 6
an = a + (n - 1) d
a19 = 7 + (19 - 1) 6
= 7 + 18(6)
= 115

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