Question

the first term of a linear sequence is 3 and 8th term is 31 .find the common difference and hence find the 20th term

Answer 1

since the two terms are 7 terms apart, 7d = 31-3 = 28
So, now you know d, you can find a, and then
a + 19d.

Answer 2

Help me to solve the question

Answer 3

Yes
I agree

Answer 4

Help me solve it

Answer 5

help me to solve it