PPSC Past Paper Sub inspector Punjab Police (Service Quota) 2019 Solved MCQs, Computer MCQs, Computer Short keys MCQs, PPSC Solved Past Papers MCQsThe shortcut for undo is? Posted on April 14, 2021 by Rana TahirA. Ctrl U B. Ctrl D C. Ctrl Z D. Ctrl OShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)