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Why do cereals come in cuboid box?
It makes it easier to put the boxes into outers for shipment (the outer will also be a cuboid and will have an exact number of cereal packets in it without any wasted space, and the cuboid outer is easier to stack for transportation);The cuboid cereal packets stack easier on the shop shelf;The cuboid cereal packets stack easier in the cuboid cupboards of [most] houses.
What is matrix in maths?
It is a table of items, usually numbers. For example, you might consider the prices of several items in a shop. Put these in a column. Then for the same items in a different shop, another column alongside the first. And several shops. You finish up with an array of prices. That is an example of a matrix.
How do you make a sentence with nothing?
After the hurricane, Bart knew that there was nothing left of his shop, which was swept into the sea by the fierce winds.
Why do clothing stores use odd numbers as their sizes?
Odd numbers are for adults/teen clothing. Even numbers are for toddlers/children's clothing. This way when, for example, a small 'tween' says they are size one, you automatically know to shop in the teen/adult section of a clothing store, rather than hopelessly sifting through all the outfits in the children's section wondering how they manage to fit into such small clothing : )
Alternate Wordings for 'In a shop there are 20 customers 18 of whom will make a purchase. If three customers are selected one at a time at random what is the probability that all will make a purchase?
Here is another way to phrase the question: If 18 out of 20 customers make a purchase in a shop, and three customers are selected at random, what is the probablity that all will make a purchase? Each random customer has a 18/20 chance of being one that purchased, so the probability that all three make a purchase is 18/20*18/20*18/20=.729
