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For easier work, expand along the row or column with most:

AOnesss
BTwosss
CDigits
DZeros
Answer & Solution
Correct answer: D. Zeros
1. Each term is multiplied by its element. 2. An element of zero kills its whole term. 3. So expanding along the line with most zeros is easiest. 4. The answer is zeros. _Source: syllabus Mathematics, Ch 4 'Determinants'_
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