Let P(n) be "a postage of n cents can be formed using 5-cent and 17-cent stamps if n is greater than 63".Basis step: P(64) is true since 64 cents postage can be formed with one 5-cent and one 17-cent stamp.Inductive step: Assume that P(n) is true, that is, postage of n cents can be formed using 5-cent and 17-cent stamps. We will show how to form postage of n + 1 cents. By the inductive hypothesis postage of n cents can be formed using 5-cent and 17-cent stamps. If this included a 17-cent stamp, replace this 17-cent stamp with two 5-cent stamps to obtain n + 1 cents postage. Otherwise, only 5-cent stamps were used and n 65. Hence there are at least three 5-cent stamps forming n cents. Remove three of these 5-cent stamps and replace them with two 17-cent stamps to obtain n + 1 cents postage.Hence P(n + 1) is true.
Answer:
Project life cycle is the time taken to complete a project, from start to finish.
The three project life cycles model include the following:
- Predictive
- Iterative and Incremental
- Adaptive
Explanation:
Predictive project life cycles model: In this stage, the three major constraints of the project which are the scope, time and cost are analyzed ahead of time and this analysis is well detailed and the detailed scope of the project is done right from the start of the project.
Iterative and Incremental life cycles model: In this iterative and incremental model, the project is again split into stages that can be sequential or overlapping and at the first iteration of the project, the scope is determined ahead of time.
Adaptive life cycles model: Also in this stage, the project is split up into phases but because these phases are more rapid and ever changing unlike the other models, the processes within the scope can work in parallel.
Similarities
- They make use of high level planning.
- They are sequential and overlapping.
- They make use of high level scope.
Differences
- The predictive life cycle model makes use of a detailed scope at the beginning of a project while the other models make use of detailed scope only for each phase.
- In predictive life cycle model, the product is well understood, in other models, the projects are complex and not easily understood.
- There is periodic customer involvement in predictive and interative life cycle model while the customer involvement in the adaptive model, the customer model is continuous.
Need a better discription of the question to finalize an answer.
Web designers select a common font To make the page easier to read
<u>Explanation:</u>
The taste and preferences of one person differs greatly with that of the other person. Some person likes one type of font in web design that appeals his eyes whereas it may be irritating to others. While designing a web page some of the important things must be taken into consideration in which the font type that you use is an important thing. .
Web pages usually have limited font types that you can use with. A wed design that is designed greatly with pleasing layouts and designs, visual cues, variations in order to ease the readers gains more visitors. The reason for which the web designers commonly select a standard font is to provide readers an easier way to read the website's contents.
