PPSC Past Paper ESE General Labour & Human Resource Dept-Evening 2019 Solved MCQs, Computer MCQs, PPSC Solved Past Papers MCQsComputers use the …. number system to store data and perform calculations? Posted on April 24, 2021 by Rana TahirA. binary B. octal C. decimal D. hexadecimalShare 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)