Use APKPure App
Get 21 Button++ old version APK for Android
9 + 10 = 21
It's true (kinda). 9 + 10 = 21. Listen to that famous Vine again and again... and again. With this simple app, you will
get to hear your favorite kid tell you the answer to 9+10.
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There will be more apps like this from Kindust soon! Keep watching!
Disclaimer #1: 9 + 10 ≠ 21. Duh.
Disclaimer #2: It can get really annoying...