PPSC Assistant (BS-16), Anti-Corruption Establishment Punjab 2020, Maths MCQs, Number Series, PPSC Solved Past Papers MCQschange the odd one out 5, 10, 15, 20, 81, 25, 30? Posted on April 10, 2021 by Rana TahirA. 5 B. 10 C. 25 D. 81Share 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)