Max IQ

Does memorizing facts still give our youth a competitive advantage in a Google world? Discuss...

Realize your IQ potential!

Four kids used the following 4 methods to solve 36/3: kid (a) had the 12 times table memorized; kid (b) used long division; kid (c) solved 36/3 = (30+6)/3 = 30/3 + 6/3 = 10+2 = 12; kid (d) used a calculator... Which kid exhibited the deepest level of mathematical understanding? Discuss...

Special riddle for April Fools' Day (be careful): A bat and a ball cost a dollar and ten cents in total. The bat costs a dollar more than the ball. How much does the ball cost?

Does memorizing facts still give our youth a competitive advantage in a Google world? Discuss...

Realize your IQ potential!

OK - it's time to give away the answer (and more importantly the logic behind it)! When you pick that first card, you really don't care what you get, since there are exactly 4 cards of each number (so two of a kind is equally likely for any such 'kind')... Probability for that first card is therefore 1. Now that you've already picked that card, there are 51 cards remaining, and exactly 3 of those cards will match the card that you already have in your hand. Probability of picking a matching card is therefore 3/51. Since we require success in BOTH events, we multiply the probabilities, so 1 x 3/51 = 3/51 = 1/17.