(PIGEONHOLE PRINCIPLE) Answer the following problems: 1) March 2020, a woman was said to be exactly 3 months pregnant. How many days will it take to make sure that the baby is already delivered? 2)...

Pigeonhole principle

Extracted text: (PIGEONHOLE PRINCIPLE) Answer the following problems: 1) March 2020, a woman was said to be exactly 3 months pregnant. How many days will it take to make sure that the baby is already delivered? 2) How many letter characters should a password be composed making sure that there are at least 2 same letter in the password? 3) If John has a box containing 1 pair of yellow, red, blue, and black handkerchiefs, how many handkerchiefs must John pull out of the box to guarantee that he has a pair? 4.) How many cards should you pick in a deck making sure that at least two of the cards will be spades? 5.) If a woman has 45 pairs of sandals, how many days will it take for her to repeat her sandals she uses one everyday?