Mathematics · Matrices and Combinatorics
What is the number of different 2 × 2 matrices, each having 4 entries, that can be formed using the digits 1, 2, 3, 4 when repetition of digits is allowed?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1256✓
- 2254
- 3216
- 472
Correct answer
256
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