Question 475841
answer:

t ∈ A

analyze all choices:

p ∈ A.....there is no {{{p}}} in set {{{A}}};so, {{{p}}} is NOT element of set {{{A}}}


r ∉ A........there IS {{{r}}} in set {{{A}}};so, the statement that {{{r}}} is NOT element of set {{{A}}} is NOT true

t ∈ A............right answer, {{{t}}} in set {{{A}}}


A Ø..........not true, set {{{A}}} is not empty set


5 ∈ A ........not true, there are NO numbers in set {{{A}}}; so, {{{5}}} is NOT element of set {{{A}}}