[中學] 這是振聲的入學考試題

[ostracize (bucolic)]

有十六的方格，方格內有數字。
3, 6, 3, 5
4,12,11, 1
3, ?,15, 5
1, 6, 7, 2

請問問號是什麼數字?

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Practice doesn't necessarily make perfect, but it makes permanent.
Premature practice (practice beyond the learner's competence) or practice
without error correction makes imperfection permanent.

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推 kerry0720   : 8
→ kerry0720   : 12=3+6+3，11=5+1+5，15=6+7+2，4+3+1=8
→ ostracize   : 謝謝