Exemplar exercise problems XIV — task. Mathematics CBSE, Class 8.

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1. For every rational numbers

$x$ ,

$y$ and

$z$ ,

$x + (y \times z) = (x + y) \times (x + z)$ .

2. For all rational numbers

$a$ ,

$b$ and

$c$ ,

$a (b + c) = ab + bc$ .

3. Between any two rational numbers there are exactly ten rational numbers.

4. Rational numbers are closed under addition and multiplication but not under subtraction.

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26. Exemplar exercise problems XIV