Question
PSLE
Letters D, E and Z formed a patten as shown below.

D E D Z D D E D Z D D E D Z D . . .

If there are 68 'D', what is the greatest possible number of letters in the pattern?
2 m

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PSLE
Letters D, E and Z formed a patten as shown below.

D E D Z D D E D Z D D E D Z D . . .

If there are 68 'D', what is the greatest possible number of letters in the pattern?