End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
సంఖ్యవ్యవస్థ గణితం (Number System) http://satveeracademy.com/number-system-sankhya-vyavastha/