Play with Patterns

What is the next term in the sequence: $2, 7, 12, 17, \dots$?

Complete the simple counting sequence: $51, 52, 53, 54, \dots$

Identify the next number in the sequence: $80, 75, 70, 65, \dots$

Complete the sequence: $C, F, I, L, \dots$?

What comes next in the pattern: $H, I, H, I, \dots$?

Find the next set: $P11, Q22, R33, \dots$?

Identify the next shape in the sequence: $Triangle, Triangle, Square, Triangle, Triangle, \dots$

Find the next number in the pattern: $4, 5, 4, 5, \dots$

Which letter comes next? $X, O, X, O, X, \dots$