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# How to solve questions on Alphanumeric Series?

Learn to solve questions based on Alphanumeric series
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Alphanumeric (sometimes shortened to alphameric) is a combination of alphabetic and numeric characters. In some cases, it may include upper and lower case letters, punctuation marks, and symbols (such as @, &, and *,).

This type of reasoning is a mixed bag of coding-decoding, series-based reasoning and finding positions based reasoning questions.

Points to note

Before jumping to the questions, let us understand the meaning of few key words that are generally used in such questions like "following, followed by, preceding, and preceded by".

• Let us take two successive alphabets Y and Z. Here, Y is preceding Z and Z is preceded by Y. Also, Z is following Y and Y is followed by Z.
• Now, take three successive alphabets X, Y and Z. Here X and Y are preceding Z, but Y is immediately preceding Z whereas, X is not immediately preceding Z. Similarly, Y and Z are following X, but Y is immediately following X whereas, Z is not immediately following X.
Alphanumeric Series: Solved Examples

DIRECTIONS (Example no. 1-5): Study the following digit-letter-symbol sequence carefully and answer the questions given below:

4 P + S r 9 B # A 3 ? 7 c > Z % 6 d & Q @ 1

Example 1: If the above sequence is written in the reverse order, then which element will be 5th to the right of 16th element from the right end?

Solution: Reversed Sequence - 1 @ Q & d 6 % Z > c 7 ? 3 A # B 9 r S + P 4.

Hence, now the 16th element from the right end is % and 5th to the right of % is ?

Example 2: How many such numbers are there in the above sequence, each of which is immediately preceded by a consonant and immediately followed by a symbol?

Solution: Check for the sequence Consonant-number-symbol. There is only 1 such case in the above sequence: A 3 ?

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Example 3: Which element is seventh to the left of sixteenth element from the left in the above sequence?

Solution: The sixteenth element from the left is %. Now, we move 7th to the left of %, which is A. Hence, A is be the answer.

Example 4: If the first half of the series is written in reverse order, then which element will be fourteenth from the right end?

Solution: There are a total of 22 characters in the above sequence. Since, the first half of the above sequence is reversed, therefore, the sequence is:

? 3 A # B 9 r S + P 4 7 c > Z % 6 d & Q @ 1
So, the required 14th character from right is +

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Example 5: Which element will be fourteenth from the right end, if second half of the series is reversed?

Solution: There are total 22 characters given in the above sequence. As only the second half is reversed the sequence becomes:

4 P + S r 9 B # A 3 ? 1 @ Q & d 6 % Z > c 7
So, the required 14th character from right is A.

Alphanumeric Series: Key Learning

• One of the most scoring question-type in any competitive exam is alphanumeric series puzzles. These questions are high scoring as they can be solved very quickly.
• Learning shortcuts to handle these types of questions will significantly boost your reasoning score. Hence, try to practice as many questions as you can.

For any query on any concept or example, feel free to post in the comment section below.

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