Question

find the fourth term of an a.p. whose first term is 12 and common difference is -2​

Answer 1

Answer:

please mark as a brainliest answer

Answer 2

The fourth term of the AP is 6

Given :

For an AP first term is 12 and common difference is - 2

To find :

The fourth term of the AP

Concept :

If in an arithmetic progression

First term = a

Common difference = d

Then nth term of the AP

= a + ( n - 1 )d

Solution :

Step 1 of 2 :

Write down first term and common difference

Here it is given that for an AP first term is 12 and common difference is - 2

First term = a = 12

Common Difference = d = - 2

Step 2 of 2 :

Find fourth term of the AP

The fourth term of the AP

= a₄

= a + ( 4 - 1 )d

= a + 3d

= 12 + 3 × ( - 2 )

= 12 - 6

= 6

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