Is $(π - \frac{22}{7})$ a rational number, an irrational number or zero.

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Solution

As $π$ is an irrational number, and $\frac{22}{7}$ is a rational number, so, the difference of the two is an irrational number.

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(π - \frac{22}{7})

State, in each case, whether the given statement is true or false.

(i) The sum of two rational numbers is rational.

(ii) The sum of two irrational numbers is irrational.

(iii) The product of two rational numbers is rational.

(iv) The product of two irrational numbers is irrational.

(v) The sum of a rational number and an irrational number is irrational.

(vi) The product of a nonzero rational number and an irrational number is a rational number.

(vii) Every real number is rational.

(viii) Every real number is either rational or irrational.

(ix) $π$ is irrational and $\frac{22}{7}$ is rational.

$\frac{22}{7}$ is a rational number but pi is an irrational number. Comment on this. [3 MARKS]

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