Alphanumeric Questions

The alphabet-numeric series is one that combines both the alphabets and the numbers. In this series, the letters and numbers, and occasionally some symbols, are mixed in such a way that they form a logical pattern or sequence, and the link between them is discovered by observing their placements and relationships with the preceding and following terms. As a result, these forms of series differ from traditional series in that each number and alphabet have a relationship.

How Do You Answer Alphanumeric Series Questions?

Alphanumeric (sometimes spelled alphameric) is a character set that combines alphabetic and numeric characters. It may contain upper and lower case letters, punctuation marks, and symbols (such as @, &, and *,) in some circumstances. Alphanumeric series questions are frequently posed in many competitive exams.

This form of reasoning combines coding and decoding, series-based reasoning, and locating positions-based reasoning.

Notes: Before we go into the questions, let’s define a few crucial terms that are commonly used in such questions, such as “following, followed by, preceding, and preceded by.”

Let’s look at the letters Y and Z in order. Here, Y comes before Z, and Z comes after Y. Z is also following Y, and Y is followed by Z.

Take three alphabets in order: X, Y, and Z. X and Y are both before Z in this case, however Y is immediately preceding Z whereas X is not. Y and Z are both following X, but Y is directly following X while Z is not.

Series: Alphanumeric Exercising Solutions

(Examples 1–3) Directions: Examine the digit-letter-symbol sequence below and respond to the following questions:

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

Example 1: Which element will be 5th to the right of the 16th element from the right end if the above sequence is written in reverse order?

Solution: 3 A # B 9 r S + P 4.

As a result, percent is now the 16th element from the right end, and? is the 5th element to the right of percent.

Method of shortcut: There is an alternative to writing the sequence in reverse order to discover the solution. Because both directions are presented from the right, subtract: 16R – 5R = 11R

The element is now the 11th from left of the original series, i.e. ‘?’, because the question asks for the sequence to be reversed.

Example 2: Which element will be fourteenth from the right end if the first half of the series is put in reverse order?

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

In the above sequence, there are a total of 22 characters. The sequence is:? 3 A # B 9 r S + P 4 7 c > Z % 6 d & Q @ 1 because the first half of the above sequence is reversed. ‘+’ is the needed 14th character from the right.

There is another way to answer the question without having to reverse the first half of the series. Because the sequence comprises a total of 22 characters, the first half contains 22/2 = 11 characters.

When we subtract 14R from 11R, we obtain 3R. It will be the 3rd element from the left of the original series for the reversed half, i.e. ‘+’.

Example 3: If the second half of the series is inverted, which element will be fourteenth from the right end?

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

In the above sequence, there are a total of 22 characters. The sequence becomes: 4 P + S r 9 B # A 3? 1 @ Q & d 6 % Z > c 7 because only the second half is reversed. As a result, A is the needed 14th character from the right.

Note: You can obtain the answer without inverting the second half if you look closely. The 14th character from the right end will be in the first half, because each half has 22/2 = 11 characters.

As a result, it may be found immediately from the original series; ‘A’ is the 14th character from the right in the original series.

Conclusion

The alphabet-numeric series is one that combines both the alphabets and the numbers. In this series, the letters and numbers, and occasionally some symbols, are mixed in such a way that they form a logical pattern or sequence, and the link between them is discovered by observing their placements and relationships with the preceding and following terms. As a result, these forms of series differ from traditional series in that each number and alphabet have a relationship.