Challenge Problems( Week 50 Practice) 1. There are 5 colors for all my crayons. All my crayons are blue except 16. All my crayons are either yellow or green except 9. All my crayons are either gray or red except 11. How many crayons do I have? 2. Eric sells shoes to make a living. One day, a customer came to buy a pair of shoes with a $50 bill. The cost of a pair of shoes was $28, and and the price was $35. Eric had no change at the time, so he exchanged the $50 bill for 50 one-dollar bills with Jennifer. The customer took the shoes and $15 of change. Later, Jennifer found that the $50 bill Eric exchanged with her is a counterfeit bill, so Eric had to pay back the money to Jennifer. How much (in dollars) did Eric lose in the sale? 3. Bubble sort is a simple sorting algorithm that works by repeatedly stepping through the list to be sorted, comparing each pair of adjacent items and swapping them if they are in the wrong order. The pass through the list is repeated until no swaps are needed, which indicates that the list is sorted. The algorithm gets its name from the way smaller elements "bubble" to the top of the list.The sequence of the following numbers [9, 6, 7, 2, 5] if sorted by bubble sort into the order from smallest to biggest. How many swaps will happen during the sorting? 4. The weight of a glass bowl half filled with water is 60 ounces. If the bowl is full, the total weight of the bowl and water is 94 ounces. What is the weight of the bowl (in ounces)? 5. There are a total of 34 bicycles and tricycles with a total of 87 wheels. How many tricycles are there? |