In general if it's not explicitly stated as multiple/unlimited, then the default is one. Best to check with them.
Win $5,000 Cash with Equal Amount to Nominated Charity from Mamamia Pty Ltd
7
Dates
Closing Date
10/12/2017 11:45pm
Prizes
Description
$5,000 Cash (EFT) with $5,000 to Winner's Nominated ACNC Charity.
No. of Prizes
1
Total Prize Pool
$10,000.00
Entry Requirements
Open To
Australia-wide
Entry Limit
One per person
Entry Methods
Website
Prerequisites
n/a
In 25 wol, how do you #ChooseKind?
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I could not find in the T's and C's whether it was only one entry per person, OP can you confirm this?