Question

Which of the following is a singleton set? *

a)P = {x|x^2 = 49, x ∈ I}

b)Q = {y|y^2 + 5 = 2y^2 + 4, y ∈ I}

c)R = {m|m ∈ I, m^3 = 27}

d)S = {n|n^2 - 25 =0)
Plz answer this question
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Answer 1

c) R{M|M€ I, M^3=27}

THIS IS A SINGLE TON SET