Question

P is a set of all integers from 20 to 70 both inclusive.
Q={x|x € P, x is a perfect square)
R = lyly e P, y is a prime number}
S = z|ze P, the tens digit of z > its units digit}
List the following sets:
(a) Q∩R (6) Q∩S (c) Q ∩ R ∩ S
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Answer 1

Answer:

c is the correct answer

next time try to give the question more properly so other can also give answer and thank you