How to determine the maximum number of cloudy days that would be considered usual for June?

1) The question screenshot has been attached down below answer ques 4 a and b step-by-step.

1) Suppose that a photocopy machine can reduce copies to 65 percent of their original size. By copying an already reduced copy, further reductions can be made. a) If a page is reduced to 65 percent, what percent enlargement is needed to return it to its original size? answer = (      )  percent b) Estimate the number of times in succession that a page must be copied to make the final copy less than 15 percent of the size of the original. number of times = (      )

Use the pigeonhole principle to solve this: In a room with 565 children ages 10-12, will at least 2 children share the exact same birthday? Explain.