Daily Archives: July 26, 2020

The Main Challenge This is very famous in Japan, having been an integral part of a TV advert for Google’s Nexus 7 tablet a few years ago.  Click this YouTube link for a browse. Using the numbers 1, 1, 5 … Continue reading →

The Main Challenge This puzzle invites you to use seven 2’s (2 2 2 2 2 2 and 2), with + – × ÷ available, in each separate calculation. For instance, to make 1 and 2 you could simply do:  2 + (2÷2) – (2÷2) – (2÷2) … Continue reading →