5, 8, 11, 14, 17, 20. What is the 100th number and what is the nth number

5, 8, 11, 14, 17, 20. What is the 100th number and what is the nth number

Arithmetic sequence, d = 3, A1 = 5 formula an = a1 + (n-1) d deduces an = 5 + 3 (n-1) = 3N + 2
Substituting n = 100, we get 302