1.

Identify the following sets as finite or infinite.(i) X = The set of all districts in Tamilnadu.(ii) Y = The set of all straight lines passing through a point.(iii) A = {x : x ∈ Z and x < 5}(iv) B = {x : x2 – 5x + 6 = 0, x ∈ N}

Answer»

(i) Finite set

(ii) Infinite set

(iii) A = { ... , -2, -1, 0, 1, 2, 3, 4}

∴ Infinite set

(iv) x2 – 5x + 6 = 0

(x – 3) (x – 2) = 0

B = {3, 2}

∴ Finite set.



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