Which of the following is true about real numbers?
All real numbers are rational numbers
Rational and irrational numbers together constitute real numbers
All real numbers are irrational numbers
Some rational numbers are real numbers
Rational and irrational numbers together constitute real numbers.
State, in each case, whether true or false.
(i) √2+√3=√5
(ii) 2√4+2=6
(iii) 3√7−2√7=√7
(iv) 27 is an irrational number.
(v) 511 is a rational number.
(vi) All rational numbers are real numbers.
(vii) All real numbers are rational numbers.
(viii) Some real numbers are rational numbers.
Which of the following is a true statement ?
(a) The sum of two irrational numbers is an irrational number.
(b) The product of two irrational numbers is an irrational number.
(c) Every real number is always rational.
(d) Every real number is either rational or irrational.