Question
PSLE
Letters X, P and F formed a patten as shown below.

X P F X P X P F X P X P F X P . . .

If there are 89 'X', what is the greatest possible number of letters in the pattern?
2 m

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PSLE
Letters X, P and F formed a patten as shown below.

X P F X P X P F X P X P F X P . . .

If there are 89 'X', what is the greatest possible number of letters in the pattern?