Question

for an A.P if a=10 and d=5 then find t3 and t4​

Answer 1

Answer:

diff is 5,first term 10

10,15,20,25,30

so, 3rd term is 20

4th term is 25.

Answer 2

Answer:

t₃ = 20 and t₄ = 25

Step-by-step explanation:

Given :

a = 10

d = 5

To find :

t₃ and t₄

Solution :

nth term of an A.P is given by

→ tₙ = a + (n - 1)d

where

a denotes the first term

d denotes the common difference

Third term (t₃) :

t₃ = 10 + (3 - 1)(5)

t₃ = 10 + 2(5)

t₃ = 10 + 10

t₃ = 20

The third term = 20

Fourth term (t₄) :

t₄ = 10 + (4 - 1)(5)

t₄ = 10 + 3(5)

t₄ = 10 + 15

t₄ = 25

Fourth term = 25