Minute Mystery: The Alphabet Sequence

Bite-sized brain teaser to solve in a minute or less.

 

 

The Alphabet Sequence

Identify the missing letter in the sequence:

A, C, F, J, O, ?

 

 

Solution

Determine the positions of the given letters:
  • A is the 1st letter.
  • C is the 3rd letter.
  • F is the 6th letter.
  • J is the 10th letter.
  • O is the 15th letter.

 

Calculate the differences between consecutive positions:

  • From A to C: 3 − 1 = 2
  • From C to F: 6 − 3 = 3
  • From F to J: 10 − 6 = 4
  • From J to O: 15 − 10 = 5

The differences form the sequence: 2, 3, 4, 5.

 

Determine the pattern:

The differences are increasing by 1 each time. Therefore, the next difference should be 6.

 

Find the missing letter:

  • The last letter O is in position 15.
  • Adding the next difference: 15 + 6 = 21

The 21st letter of the alphabet is U.


The missing letter in the sequence is U.

 

 

Our Minute Mysteries are released every Sunday.

Get a FREE murder mystery game delivered to your inbox when you subscribe to our mailing list.

 
 
Find more full-size mystery games with:
+ A longer playtime for hours of fun
+ Life-like evidence, such as newspaper clippings, cryptic letters, suspects' statements, and more
+ Engaging clues to test your problem-solving skills

 

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.