Anonymous posted an Question
August 16, 2022 • 17:21 pm 150 points
  • IIT JAM
  • Mathematics (MA)

11. what is the number of surjective maps from the set {1,..., 10, to the set {1,2}? (a) 90 (b) 1022 (c) 98 (d) 1024

11. What is the number of surjective maps from the set {1,..., 10, to the set {1,2}? (a) 90 (b) 1022 (c) 98 (d) 1024

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  • Anonymous User Best Answer

    A={1,2,3...10} B={1,2} total function from A to B IS 2¹⁰=1024 ONE fun f(x)=1 for all x second function f(x)=2 for all x these are not surjective so numbers of surjective function 1024-2=1022

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