Australian Lottery News

Why Picking Lotto Numbers Using Birthdays Reduces Your Odds of Keeping the Full Prize

Friday 5 December 2025

Many Aussies choose lotto numbers using birthdays and anniversaries—easy to remember, sentimental, but statistically risky. Because birthdays fall between 1 and 31, you end up competing with thousands of players using the same number pool. You’re not reducing your chances of winning the jackpot, but you are increasing the chance of sharing it. Here’s why that matters, especially in Oz Lotto, Saturday Lotto and Powerball.