Question Number 22473 by Sahib singh last updated on 19/Oct/17
Commented by ajfour last updated on 19/Oct/17
$$\left(\mathrm{1}\right)\:{and}\:\left(\mathrm{3}\right){are}\:{correct}. \\ $$$${For}\:{solution}\:{see}\:{Q}.\mathrm{22487} \\ $$
Question-22473