Question

The fourth term of an ap is 6 more than its second term.if the eighth term is 26 then find ap

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Let a be the first term and d be the common difference of the AP

Given,

a8 = 26

So,

a + 7d = 26

Also,

a4 = a + 3d

a2 = a + d

Subtracting,

a4 - a2 = 4d

6 = 4d

d = 3/2

a + 7d = 26

a + 7×3/2 = 26

a = 26 - 21/2

a = 31/2

So,

First term, a = 31/2

Common difference, d = 3/2