Number and Letter series questions and answers for competitive exams

1, 3,7,13,21,?

BDF, CFI, DHL, ?

Direction: In each of the following questions, a series is given, with one/two terms missing. Choose the correct alternatives from the given ones that will complete the series. W-144, ?, S-100, Q-81, 0-64

Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . H- JH - IJHHI - HH -JH

7, 18, 40, 73, 117, ?

2, 6, 8, 14, 22, 36, ?, 94

6, 7, 15, 46, 185, ?

2.1, 5.2, 8.4, 11.7, 15.1, ?

Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . m _ m _ am _ a _

Direction: Which one set of letters when sequentially placed at the gaps in the given letters series shall complete . oopqop_qoo_qo_oqo_pq

110, 99,86, ?, 54, 35

321, 301, ?, 181, 21

39, 169, 299, ?

Direction: In the following question, number of letters are skipped in between by a particular rule. Which of the following series observes the rule?

2816, ?, 176, 44, 11