A study says that in the modern world, human attention decreases — in fact, the average attention span is less than that of a goldfish. Well, we definitely need to change this situation and practice our attentiveness. We can start with something simple like tests, for example. We is fond of solving riddles and...

This quiz could appear easy however it’s tougher than you assume – solely a genius will be capable to rating 100%. Assume you have got what it takes? Give it a go! 1. B is the largest. B is greater than C. C is...