Question

Consider the arithmetic sequence 3,9, 15, ...., 1353
Find the number of terms in the sequence

Answer 1

arithmetic progression with common difference 6

Answer 2

1353 = 3 + (n-1)6
:-D

Answer 3

now, find n

Answer 4

did u understand? @4meisu

Answer 5

Nth element = First element + (number of elements-1)*(common difference)

Answer 6

\[\Large a_{n}=a_{1}+(n-1)d\]
where
an=1353
d=6
a1=3
i hope you can find n now .

Answer 7

Yes I do. Thank you :)

Answer 8

WELCOM