In each of the following, tell what computation must be done last. a. 5·6 – 3. 4+2

The workers of the company "Malova" work in a 5-day work week and worked them for 22 days in the month of November 2020. The standard work schedule is 8 hours per day with a 30-minute break included in this time. Now, "Malova's" company is in the process of manufacturing screwdrivers and manufactured 3100 pieces of screwdrivers. In addition, the company manufactures screwdrivers in batches of 300 and after each batch makes a pause to check the quality of production and make certain adjustments to the machines if necessary. The break is 1 hour. Calculate the parts produced per hour by the Malova company in November.   Important: Use the formula (the one I put in the image)

You are signing up to a website that requires you to create a username that is exactly 5 characters long. To create the username, you can use uppercase or lowercase letters (A-Z or a-z, 26+26 possible choices), numerical digits (0-9, 10 possible choices) and the symbols (*, # and @). note: suppose that the first 2 characters must be an uppercase letter and the last 2 characters must be a number. Your friend has already signed up, and he wants to see if you can guess his username correctly. He tells you that the first two characters are ”AD”, the 3rd character is a symbol, and the last two numbers are the same. You can make only one guess. You have no idea, so you make your guess at random using the information he gave you. What is the chance that your guess is correct?

Write out the addition and multiplication tables for Z4 and Z7

What is the smallest number that can be represented as the sum of four positive squares (not necessarily unique) in two different ways?

If a chicken and one half lays an egg and one half in a day and one half, how may eggs will 30 chickens lay in 30 days?