Which of the following set is a singleton set. Option 1: P = {x|x is a natural numbe x + 5 =7} Option 2: Q = {x | x2 = 25 , x ∈I} Option 3: R= {x | x2 - 4 = 0 , x ∈I} Option 4: S = {x | x is a even prime number x < 2}
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Step-by-step explanation:
x+5=7
x=7-5
x=2
option first is singleton set
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