Let A = {1, 2, 3, … n} and B = {a, b}. Find the number of surjections from A into B.
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Answer:
The number of surjections from set A having n elements to set B having 2 elements is 2n−2
Step-by-step explanation:
A={1,2,3,......n}B={a,b}
A has n elements B has 2 elements
number of surjection is 2n−2
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