But bro i uninstalled Flipkart ebook app and more app but the app ask update every time how remove it face book also ask update i updated after some time it ask update again plz give suggestions
It depends with the device. I guess it could be 100MB thought the update will say 750MB.
As for your apps that are updating all the time or crashing all the time, make sure core apps are updated like people or phone or messaging. For the apps that keep crashing, remove them and install again.
Also make sure there aren't any further update for the OS so check updates in settings again