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Spell it out (Posted on 2005-10-10) Difficulty: 3 of 5
What is the next number in this sequence:

ONE
EIGHT
FIFTEEN
TWENTY TWO
TWENTY FIVE
THIRTY

See The Solution Submitted by Lisa    
Rating: 3.6000 (5 votes)

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Solution Puzzle Solution | Comment 5 of 6 |
(In reply to Answer by K Sengupta)

Spelling out the total number of strokes required to write a given
term in capital letters generates the next term.

For example, the letter "O" is constituted by one circular stroke,
while "N" and "E" respectively contain 3 strokes and 4 strokes.

Thus, the total number of strokes in "ONE" is 1+3+4 = 8, which is spelled out as "EIGHT"(in capital letters) and we observe that
this corresponds to the second term.

Now, the number of strokes required:

To write "T" = 2
To write "H" = 3
To write "I" = 3
To write "R" = 3
To write "Y" = 3

Accordingly, the total number of strokes required to write "THIRTY" = 2*2 + 3*4 = 16, which is spelled out as "SIXTEEN" in capital letters.

Consequently, the required next term is "SIXTEEN"

Edited on April 30, 2008, 2:11 am
  Posted by K Sengupta on 2008-04-30 02:03:47

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