Question

Write the following sets in the roster form of X={x/x is prime and x^{2} <30}

Answer 1

Prime numbers are 2,3,5,7,9 ..etc

for x=2,x²=4<30

for x=3,x²=9<30

for x=5,x²=25<30

for x=7,x²=49>30

So X={2,3,5}

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