In an AP, if d = - 4, n = 7 and an = 4, then a is equal to


As we know, nth term of an AP is


an = a + (n - 1)d


where a = first term


an is nth term


d is the common difference


4 = a + (7 - 1)(- 4) …..(Given Data)


4 = a - 24


a = 24 + 4 = 28

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