Question

1) For a given AP, if d = -4, n = 7 and
an = 4, then a =​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Given:

d = -4

n = 7

an = 4

To Find:

First term, a = ?

Solution:

an = a + (n - 1)d

4 = a + (7 - 1)-4

4 = a + (6)-4

4 = a - 24

a = 4 + 24

a = 28

Hence, the First term is 28.