No, Lisa is not correct in saying that 53 is the same as 15.1s. She has made a mistake in equating a whole number (53) with a decimal (15.1s). These two values are not equivalent.
The correct answer for 53 is simply 53. It is a whole number with no decimal component.
Lisa should have recognized that 53 is a distinct whole number and should not be compared to a decimal like 15.1s.
As for the second question, Chris's statement that factors occur in pairs and all whole numbers must have an even number of factors is not accurate. It is incorrect to say that all whole numbers have an even number of factors. Some whole numbers, such as perfect squares, have an odd number of factors because they have a repeated factor.
For example, the factors of 9 are 1, 3, and 9. It has an odd number of factors (3 factors) because 3 is repeated. On the other hand, numbers like 16 have an even number of factors because their factors do not repeat.
So, in this case, I disagree with Chris's statement. The number of factors for a whole number can be either even or odd depending on the specific number and its factors.