Question

which of the following is false statement
$which \: of \: the \: following \:is \: false \: statement \: \\1. a \div b \div c \: not \: equal \: a \div a(b \div c) \\ 2. a \div b \: is \: a \: rational \: number \: \\3. - a \div a = - 1 \\4. (a - b) + c \: not \: equal \: \frac{a}{c} + ( \frac{ - b}{c} )$
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Answer 1

Answer:

1)$\frac{a}{\frac{b}{c} }=\frac{ac}{b}$        (true)

2) a/b can be rational or irrational depending on problem

ex-: 10/3 is irrational but 6/3 is rational         (false)

3)true

4)true

so option 2 is false