Mathematics · Relations and Functions
Let A = {1, 2, 3, ...n} and B = {a, b}. Then the number of surjections (onto functions) from A into B is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12n
- 22n - 1
- 32n - 2✓
- 4n!
Correct answer
2n - 2
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