Question
PSLE
Letters F, M and K formed a patten as shown below.

F M F K F F M F K F F M F K F . . .

If there are 137 'F', what is the greatest possible number of letters in the pattern?
2 m

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PSLE
Letters F, M and K formed a patten as shown below.

F M F K F F M F K F F M F K F . . .

If there are 137 'F', what is the greatest possible number of letters in the pattern?