How many colors are there is spectrum? April 7, 2021 / By Preparation Point / Tehsildar PPSC Past Papers Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn Share on Pinterest(A) 3(B) 7 ✓(C) 4(D) 9 Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn Share on Pinterest