Challenge Problems( Week 50 Practice) 1. There are 5 colors for all my crayons. All my crayons are blue except 13. All my crayons are either yellow or green except 10. All my crayons are either gray or red except 11. How many crayons do I have? 2. Jackson 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 $26, and and the price was $34. Jackson had no change at the time, so he exchanged the $50 bill for 50 one-dollar bills with Hillary. The customer took the shoes and $16 of change. Later, Hillary found that the $50 bill Jackson exchanged with her is a counterfeit bill, so Jackson had to pay back the money to Hillary. How much (in dollars) did Jackson 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 55 ounces. If the bowl is full, the total weight of the bowl and water is 92 ounces. What is the weight of the bowl (in ounces)? 5. There are a total of 27 bicycles and tricycles with a total of 69 wheels. How many tricycles are there? |