Question

The fourth term of an AP is 13 and the second term is 3 find the common difference

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Answer 1

5

Explanation:

Given

In and AP

• a4 = 13
• a2 = 3
• d = ?

Solution

Formula for the terms of AP:

• a4 = a + 3d
• a2 = a + d

The difference of terms:

• a + 3d - (a - d) = 13 - 3
• 2d = 10
• d = 5