Which of the following are true statements Explain your answ

Which of the following are true statements? Explain your answer 2 {1,2,3} {2} {1,2,3,} 2_ {1,2,3} {2] _ {1,2,3} {2}_ {{1},{2}} {2} {{1]}, {2}}

Solution

a. true because 2 is in that set

b. false because {2} is a set, and it is not in the right set.

c. false, 2 is just a number, it is not subset.

d. True, {2} is subset of {1,2,3}

e. false, {{1},{2}} is set of sets, and {2} is not its subset, {{2}} is.

f. true