Alphanumeric Series NMAT 2023
Directions (1 – 5): In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.
Q1. 3, 7, 23, 59, 123, 221, 367
(a) 367
(b) 23
(c) 3
(d) 221
(e) 7
Q2. 8, 5, 7, 18, 80, 656, 10532
(a) 656
(b) 8
(c) 5
(d) 7
(e) 10532
Q3. 56, 70, 96, 154, 266, 490, 938
(a) 266
(b) 96
(c) 490
(d) 70
(e) 154
Q4. 132, 130, 126, 118, 102, 70, 8
(a) 70
(b) 130
(c) 8
(d) 126
(e) 132
Q5. 7, 21, 53, 101, 165, 245, 341
(a) 245
(b) 7
(c) 341
(d) 21
(e) 53
Solutions
Frequently asked questions
What does this Alphanumeric Series page test?
It's a 'find the wrong number' series question type, where each number series has exactly one number that breaks the pattern, and you must identify it.
Can you give an example question from this set?
One series is 3, 7, 23, 59, 123, 221, 367 - you must spot which single term doesn't fit the underlying pattern.
How many series questions are on this page?
There are 5 'find the wrong number' series questions (Q1 to Q5), each with its own answer options.
What skill does this question type build?
It builds pattern-recognition speed - spotting multiplicative, additive, or polynomial relationships between consecutive terms quickly enough to isolate the one outlier term.