List of top Mathematics Questions on Rational or Irrational Numbers asked in AP POLYCET

Which of the following statements is not correct?

Which of the following is not an irrational number?

If
A=(2) (4, 5) (3) {1, 2, 3) (4) (6, 7) A = {x: x is an even number less than 10} and 
B= {x: x is a prime number less than 10} 
then n(∩) is 

If p, q are co-prime numbers, then HCF (p,q)= p, q

If a, b, c are real numbers, then which one of the following shows associative property addition?

Which of the following rational numbers has terminating decimal expansion?

Which of the following is an irrational number?