S Chand ICSE Mathematics Class 6 Solution Fourth Chapter Sets Exercise 4B (O.P. Malhotra, S.K. Gupta, Anubhuti Gangal)

S Chand ICSE Mathematics Class 6 Solution Fourth Chapter Sets Exercise 4B (O.P. Malhotra,  S.K. Gupta, Anubhuti Gangal)

EXERCISE 4B

(1) State whether the following sentences are true or false.

(i) True

(ii) True

(iii) False

(iv) False

(v) True

(vi) True

(vii) False

(viii) False

(2) Let A = {odd numbers ≤ 19}. Insert the appropriate symbol ‘∈‘ or ‘∉‘ in blanks spaces.

(i) 4 ∉ A

(ii) 7 ∈ A

(iii) 9 ∈ A

(iv) 13 ∈ A

(v) 19 ∈ A

(vi) 2 ∉ A

(3) Write these sentences in set language using the proper symbols ‘∈‘ or ‘∉‘.

(i) 2 ∈ {1, 2, 3, 4, 5}

(ii) d ∈ {x |x| is a constant}

(iii) 32 ∉ {x |x| is a multiple of 3}

(iv) India ∉ {set of countries}

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