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.
http://man-ta-ma.farafile.ir/file/27527/جزوه-درس-آمار-و-کاربرد-آن-در-مدیریت-2-(-دانشگاه-پیام-نور-)