Question

write the 1st 5 terms of each of the following sequences whose nth terms is a$n$=3$n$

Answer 1

$a _{n } = 3n \\ \\ first \: five \: terms \: are \\ \\ a_{1 } = 3 \times 1 = 3 \\ a_{2 } = 3 \times 2 = 6 \\ a_{3 } = 3 \times 3 = 9 \\ a_{4 } = 3 \times 4 = 12 \\ a_{5 } = 3 \times 5 = 15$