Question

Điền các kí hiệu \(\in,\notin,\subset\) thích hợp vào chỗ chấm

a) 3 ........ Q

b) 3 ........ R

c) 3 ........ I

d) -2,53 ........ Q

e) 0,2(35) ......... I

f) N ........ Z

g) I ......... R

Answer 1

\(3\in Q\)

\(3\in R\)

\(3\notin I\)

\(-2,53\in Q\)

\(0,2\left(35\right)\notin I\)

\(N\subset Z\)

\(I\subset R\)

Answer 2

a) ∈

b) ∈

c) ∉

d) ∈

e) ∉

f) ⊂

g) ⊂

hơi tắt tý hihi

 

Answer 3

a)\(3\in Q\)

b)\(3\in R\)

c)\(3\notin I\)

d)\(-2,53\in Q\)

e)\(0,2\left(35\right)\notin I\)

f)\(N\subset Z\)

g)\(I\subset R\)