Question

4. which of the following is a singleton set *

1]A={x|x =n²,n€N,n<=10}
2]A={x|5x-2=0, x€N}
3]A={x|x is a set of even number}
4]A={x|x²= 49,x€N }

Answer 1

Answer:

Option No. 4] is a sigletpn set

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