The letters are decreasing by 1 each time (P, O, N, M, L, K),

and the numbers are increasing by 1.
So, the next term is K6.

The letters are decreasing by 1 each time (Z, Y, X, W, V, U),

and the numbers are increasing by 1.
So, the next term is U6.

The numbers follow the sequence 1, 3, 6, 10, 15, which increases by 2, 3, 4, 5, respectively.

The letters follow a sequence where the positions in the alphabet increase by 2, 3, 4, 5, and 6 respectively (A, C, F, J, O, Q).
So, the next term is Q21.

The letters are increasing by 2 positions each time (A, C, E, G, I, J).

The numbers follow the sequence 1, 5, 14, 30, 55, which are triangular numbers:
1,1+4=5, 5+9=14,14+16=30, 30+25=55.
The next number will be 55+36=91.
So, the next term is J91.

The numbers follow the pattern 2,5,10,17,26 which increases by consecutive odd numbers:
5−2=3, 10−5=5, 17−10=7, 26−17=9.

The next difference is 11, so 26+11=37.
The letters follow the sequence A, D, G, J, M, P, which increases by 3 each time.
So, the next term is P37.

The numbers follow a sequence of perfect squares: 1², 2², 3², 4², 5², so the next number should be 5²=25
The letters follow a pattern of +3, +4, +5, +6 (A, D, I, O, T).
So, the next term is T25.

The letters are moving backward by 2 positions each time (Z, X, V, T, R).

The numbers remain constant (26).
So, the next term is R26.

The numbers follow the sequence of perfect squares: 1², 2², 3², 4², 5².

The next number will be 6²=36
The letters follow an increment of 2: A, C, E, G, I, K.
So, the next term is K36.

The pattern is formed by adding consecutive odd numbers:
2 + 3 = 5
5 + 5 = 10
10 + 7 = 17
17 + 9 = 24