AC Lim's answer to Troubled's Primary 5 Maths Whole Numbers Singapore question.

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AC Lim
Ac Lim's answer
12467 answers (A Helpful Person)
Hope this helps
AC Lim
AC Lim
3 years ago
Pattern 1 = 9
Pattern 2 = 15
Pattern 3 = 21

You can use formula:
Pattern number × 6 then +3
Therefore,
Pattern number × 6 then +3 = 339
Pattern number × 6 = 339 - 3
Pattern number = 336 × 6 = 56.
Hope this helps too.