Answer:
wdadawdawdawdawdawdawdawsdwfawf
Explanation:
Program 4: But I haven’t taken Calculus yet! OK – we admit, this one might look nasty, but read on because it’s not that bad. One of the things that computing folks do A LOT (especially CS students) is analyze how long a program takes to run. In the first step, something might take 1 unit of CPU time. The second step might take 2, the third 3 and so on. Mathematically, that would be expressed by the "summation" operator as this: ∑???? ???? ????=1 This is may look complex, but all it’s saying is that i goes from 1 to n and you sum all those numbers together. So, if (n = 10), ∑???? ???? ????=1 = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55 Fortunately, this reduces to a simple formula. When summing numbers from 1-n, the sum is: (n+1)*n/2 Why? It’s all in how you "pair" the numbers together. In the example above, we could pair (1+10) =11, (2+9)=11, (3+8)=11 and so on. That is, we have n/2 "pairs" of (n+1). Your task is, without using a loop (which we haven’t covered yet), to write a program that asks the user for a number, then prints out the sum of 1 to that number. If you use a loop, you will receive no credit
Answer:
Option D
Explanation:
Option A is rejected because adding a custom object will cost both in memory and computation power. Consider that you have 1 million users, than there will be 1 million custom objects in the memory for checking the security which is not good.
Option B is not answer because again making a custom object will cost in memory and computation power.
Option C is not good because it also makes the custom object.
Option D is selected because change sets can be made which will not cost as much as the other options are costing. Also Data Loader can have come credentials defined in it which we can use to check if the user activities are according to the rules at each level.These days these data loader object technique is used because there will be static change sets for the class of users to check security.
I think there's a typo in the question, otherwise they probably meant a 'she', since the name is Maureen.
Also, the answer is Personal hygiene and grooming.
University of Pennsylvania