Question

please help me with this question 3 and 4​

Answer 1

$Answer \: \: \\ \\ Question \: \: No \: \: \: 3 \\ \\ nth \: term \: is \: given \: as \: \: \: \: 3n - 2 \\ \\ an = 3n - 2 \\ to \: find \: the \: first \: term \: put \: n \: = 1 \\ a1 = 3(1) - 2 \\ a1 = 1 \\ for \: second \: term \: put \: n = 2 \\ a2 = 3(2) - 2 \\ \\ a2 = 4 \\ \\ for \: third \: term \: \: put \: \: n = 3 \\ \\ a3 = 3(3) - 2 \\ \\ a3 = 9 - 2 \\ \\ a3 = 7 \\ \\ so \: the \: first \: three \: terms \: of \: sequence \: \\ having \: anth \: term \: 3n - 2 \: are \\ \\ 1 \: \: 4 \: \: and \: \: 7 \: \: \\ \\ Question \: No \: 4 \\ \\ an = 2n + 4 \\ \\ for \: first \: term \: \: put \: \: n = 1 \\ \\ a1 = 2(1) + 4 \\ \\ a1 = 6 \\ \\ for \: second \: term \: put \: \: n = 2 \\ \\ a2 = 2(2) + 4 \\ \\ a2 = 8 \\ \\ for \: third \: term \: put \: \: n = 3 \\ \\ a3 = 2(3) + 4 \\ \\ a3 = 10 \\ \\ so \: the \: first \: three \: terms \: of \: sequence \: \\ having \: nth \: term \: 2n + 3 \: are\\ \\ 6 \: \: \: 8 \: \: \: and \: \: \: 10$