Question
PSLE
Letters C, D and F formed a patten as shown below.

C D F D C C D F D C C D F D C . . .

If there are 109 'C', what is the greatest possible number of letters in the pattern?
2 m

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PSLE
Letters C, D and F formed a patten as shown below.

C D F D C C D F D C C D F D C . . .

If there are 109 'C', what is the greatest possible number of letters in the pattern?