The brain teaser was shared on X (formerly Twitter) by @Parkertzb with the caption, “Brain Teaser..! How many 16 can you see?

Welcome back! For Day 4 of the challenge, let’s do a short and fun activity based around a concept called cognitive reserve.

Who does not enjoy the charm of a good brain teaser. These clever little puzzles have a way of capturing attention, sparking curiosity and offering a quick escape from routine. For many readers, ...