I have selected two companies listed in the Australian security exchange$($ASX$)$that is Mercury NZ limited and copper search limited$.$widely explain following questions $($a$)$What goodwill method is followed by both companies?

$($b$)$How goodwill or gain on bargain purchase is calculated and disclosed both companies

$($c$)$How revaluation of assets of the subsidiary is done both companies in this regard, if any,

$($d$)$How impairment of goodwill is tested both companies, if any.

$($e$)$How non$-$controlling interest $($NCI$)$is calculated and disclosed in the consolidated by both companies

financial statements.

$($f$)$Whether NCI shares any goodwill or not under the goodwill method applied by both companies