Find out the appropriate term in place of ?

$Z, Y, X, U, T, S, P, O, N, K, ?, ?$

Find out the appropriate term in place of?

$PMT, OOS, NQR, MSQ,?$

Find out the appropriate term in place of ?

? stt ? tt ? tts ?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

$? a ? b ? abaa ? bab ? bba ?$

Find out the appropriate term in place of?

$ACF, HJM, OQT, ?$

In the following question, four words are given. Which of them will come third from the left if all of them are arranged alphabetically as in a dictionary?

1) Spine

2) Spinal

3) Spinner

4) Spinet

Following questions, four words are given. Which of them will come third from left if all of them are arranged alphabetically as in a dictionary?

1) Cruise

 2) Crumb

3) Crupper

4) Crude

Following questions, four words are given. Which of them will come third from left if all of them are arranged alphabetically as in a dictionary?

1) Intense

2) Intellect

3) Intend

4) Intelligent

Arrange the given words in the sequence in which they occur in the dictionary and choose the correct sequence.

1. Repoint

2. Reptile 

3. Repent 

4. Repute