Alpha-Numeric Sequence puzzles

Logical Reasoning Questions based on Alpha-Numeric Sequence puzzles can be tried upon in this question and answers. Attempt all of them to know if you understand it's basic concept.This section is very useful for those who are preparing for competitive exams such as Written test of Bank Exams, CAT Exams, Railway Exams, SSC, UPSC,Banking,Insurance, Defence and many more.

  • Q29.Directions: What should come in the place of question mark (?) in the following alpha - numeric series?
    A4Z, B14Y, C36X, D76W, ?

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  • Q30.Directions: What should come in the place of question mark (?) in the following alpha - numeric series?
    14E, 27J, 52G, 100A, ?

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  • Q31.Direction: Study the following arrangement carefully and answer the questions given below: W 7@ I R P 3 9 B A $ 4 H D 5© M E 2 % T * 8 δ U Q N 1V 6 # K F
    If all the symbols are dropped from the above arrangement, which of the following will be the fifteenth from the left end?

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  • Q32.Direction: Study the following arrangement carefully and answer the questions given below: W 7@ I R P 3 9 B A $ 4 H D 5© M E 2 % T * 8 δ U Q N 1V 6 # K F
    How many such numbers are there in the above arrangement, each of which is immediately preceded by a symbol, and immediately followed by a consonant?

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  • Q33.Direction: Study the following arrangement carefully and answer the questions given below: W 7@ I R P 3 9 B A $ 4 H D 5© M E 2 % T * 8 δ U Q N 1V 6 # K F
    Four of the following five are alike in a certain way based on their positions in the above arrangement and so form a group. Which is the one that does not belong to that group?

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  • Q34.Direction: Study the following arrangement carefully and answer the questions given below: W 7@ I R P 3 9 B A $ 4 H D 5© M E 2 % T * 8 δ U Q N 1V 6 # K F
    Which of the following is the ninth to the right of the twenty second from the right end of the above arrangement?

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  • Q35.Direction: In each question below is given a group of letters followed by four combinations of digits/symbols numbered 1), 2), 3) and 4). You have to find out which of the four combinations correctly represents the group of letters based on the following coding system and the conditions that follow and mark the number of that combination as your answer. If none of the combinations correctly represents the group of letters, mark 5), ie 'None of these' as your answer.
    Letter : B A D E F H J K M I U 0 W F P
    Digit/Sym. Code: 6 $ 7 8 # 1 2 * % 3 © 4 9 @ 5
    Conditions: (i) If the first letter is a vowel and the last letter is a consonant, their codes are to be interchanged.
    (ii) If both the first and the last letters are consonants, both are to be coded as ‘δ’.
    (iii) If the first letter is a consonant and the last letter is a vowel, both are to be coded as the code for the vowel.

    EKFUDH

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