Question

True or False

Answer 1

\(\ \{ a \}∈ \{ a, b, c \}\)

Answer 2

false

Answer 3

why

Answer 4

false, because the set with a is not element of {a,b,c}

Answer 5

{{a},b,c} is diferente of {a,b,c}

Answer 6

\[\{a\} \in \{\{a\},b,c\}\]

Answer 7

if the question was \(\{a\} \in \{\{a\},b,c\} \) , then ?

Answer 8

{a} is a element of { {a} .... }
{a} diferent mean of 'a' only
the sets {a,b,c} is diferent of {{a},b,c}
elements of {a,b,c} are a, b, c
elements of {{a},b,c} are {a}, b, c

Answer 9

a in {a,b,c}, {a} not in {a,b,c}

Answer 10

this is confusang me

Answer 11

this is only definition thinks, and notation a is diferente of set of a
\[a \neq \{a\}\]

Answer 12

1 pen and a package with one pen have diferent mean

Answer 13

a package with a, b, c is { a, b, c }
a package with a package with a, b, c is { {a}, b, c}

Answer 14

is my second question true or falswa ?

Answer 15

{a}∈{a,b,c} is false, {a} is not element of {a,b,c}

Answer 16

if the question was {a}∈{{a},b,c} , is true, because {a} is element of {{a},b,c}