Question

Pauline wants to finish all problems in a math workbook. She decides to complete k problems on the kth day. In other words, she wants to complete one problem on day one, two problems on day two, etc. Suppose there are 450 problems in the workbook. On which day will she complete all the problems?

Answer 1

Answer:

k+t+2 . k+2kt+t . k+t a) None b) only c) only d) only e) , and Solution: First, you must find out whether k and t are odd or even. This problem is all about the results of performing operations on even and odd numbers. Given that k^2 - t^2 is an odd number, then you know that k^2 is even, and t^2 is odd.