khalfaoui1422 khalfaoui1422
  • 15-01-2024
  • Mathematics
contestada

Let
R = {1, 3. π, 4.1, 9, 10)
S = {{1}, 3, 9, 10}
I = {1,3, π}
U = {{1, 3, π), 1}
Which of the following statements are true? For those that are not, why not?
{1} ∈ S ______

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