When did John Napier develop logarithm? January 22, 2021 / By Preparation Point / Top 20 MCQs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA. 1416 B. 1614 C. 1641 D. 1804 Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn