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In this lesson, we will learn how to find the elements of a given set and determine whether given elements belong to a certain set.

Q1:

Use ∈ or ∉ to fill in the gap:

Q2:

Q3:

Does 368 belong to the set { 3 , 6 , 8 } ?

Q4:

Given that 𝑥 belongs to the set of odd numbers, and 𝑥 ∈ { 1 6 , 8 , 1 2 , 1 7 } , find 𝑥 .

Q5:

Given that 𝑥 belongs to the set of odd numbers, and 𝑥 ∈ { 1 4 , 6 , 1 6 , 1 3 } , find 𝑥 .

Q6:

Q7:

Q8:

Q9:

Q10:

Q11:

Use ∈ or ∉ to fill in the blank: 𝑒 {Adam}.

Q12:

Use ∈ or ∉ to fill in the gap: 6 { 3 6 , 1 6 }

Q13:

Q14:

Q15:

Use ∈ or ∉ to fill in the blank: o {Karim}.

Q16:

Use ∈ or ∉ to fill in the blank: h {Bassem}.

Q17:

If 𝑋 is the set of digits of the number 64 764, list the elements of 𝑋 .

Q18:

Q19:

Does 2 belong to the set of all prime numbers?

Q20:

The set { 3 , 𝑥 , 2 } represents the digits of the number 2 383. What is 𝑥 ?

Q21:

Does 100 belong to the set of multiples of 10?

Q22:

Q23:

Q24:

If 8 ∉ { 6 , 1 , 𝑥 } , what numbers can 𝑥 NOT be?

Q25:

If 6 ∈ { 5 , 𝑥 } , what is 𝑥 ?

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