"The kid starts cackling, and I realise he invented his own question in order to trick me into saying it," the teacher wrote.

Test your brain with this tricky math question! Most people get it wrong at first glance. Divide 100 by half, add fifty, and see if you can solve it correctly. Are you up for the challenge?

Challenge your brain with this tricky math puzzle! Think carefully and see if you can figure out the surprising answer to dividing 100 by half and adding 50. Perfect for math lovers and puzzle ...