Question

In an AP an=4n-2,find a5.​

Answer 1

Answer:

a_n = 4n + 2

Then,

a_5 = 4(5) + 2

= 20 + 2

= 22

Therefore, a_5 = 22.

Answer 2

a₅ = 18

Correct question : In an AP aₙ = 4n - 2 find a₅

Given :

In an AP aₙ = 4n - 2

To find :

The value of a₅

Solution :

Step 1 of 2 :

Write down nth term of the Arithmetic progression

Here it is given that nth term of an Arithmetic Progression is given by

aₙ = 4n - 2 - - - - - (1)

Step 2 of 2 :

Find 5th term of the arithmetic progression

Putting n = 5 in both sides of Equation 1 we get

a₅ = (4 × 5) - 2

⇒ a₅ = 20 - 2

⇒ a₅ = 18

∴ 5th term of the arithmetic progression

= a₅

= 18

Hence the value of a₅ = 18

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