(a) Write four irrational numbers. (b) The product of two rational numbers is 3 4 . If one of them is 5 6 , find the other number. [2 MARKS]

: Each part: 1 Mark (a) Four irrational numbers are √ 2 , √ 3 , √ 5 and π (b) Let the other number be x . ⇒ 3 4 = 5 6 × x ⇒ x = 3 × 6 4 × 5 = 9 10

(a) Write four irrational numbers. (b) The product of two rational n

Question

(a) Write four irrational numbers.
(b) The product of two rational numbers is

\frac{3}{4}

. If one of them is

\frac{5}{6}

, find the other number.
[2 MARKS]

Answer:
:
Each part: 1 Mark
(a) Four irrational numbers are

\sqrt{2}, \sqrt{3}, \sqrt{5}

and

π

(b) Let the other number be

x

\Rightarrow \frac{3}{4} = \frac{5}{6} \times x

\Rightarrow x = \frac{3 \times 6}{4 \times 5} = \frac{9}{10}

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