Question

The first term of an A. P series is 2 and the common difference is 1/2.find the 20th term.

Answer 1

T20 = 2 + 19 × 1/2

= 2 + 9.5

= 11.5 Ans.

Answer 2

Hi

Here is ur answer

Answer:

a₂₀ = 11.5

Step-by-step explanation:

a = 2

d = 1/2

n = 20

An = a + (n-1) d

a₂₀ = 2 + ( 20 - 1) 1/2

     = 2 + 19/2

     = (4 + 19)/2

a₂₀ = 23/2

a₂₀ = 11.5

Hope it helps U