Question

Lisa claims that when multiplying any number between 0 and 10 by 100, the product is greater than 100. What is a possible number that can be multiplied by 100 to show that Lisa's claim is not correct.

Answer 1

The number is 1. 1 multiplied by 100 gives 100 as answer. Lisa claims that when multiplying any number between 0 and 10 by 100, the product is greater than 100. In this case the answer is equal to 100 not greater than 100. 

So this proof shows that Lisa's claim is not correct.