In the following, four roll numbers or centre codes are given. Three share a common pattern or belong to one group, but one is different. Select the odd one out.
320120, 321756, 320644, 300457
Show answer & explanation
Correct answer: D
Explanation
Three numbers begin with 32, whereas one begins with 30. Hence, 300457 is the odd one out.
The correct answer is option 4.