Tính tổng: S =  C 2012 0 + 2 . C 2012 1 + 3 . C 2012 2 + 4 . C 2012 3 + . . . + 2013 . C 2012 2012

A.  1007 . 2 2012

B.  1007 . 2 2010

C.  1004 . 2 2011

D.  1009 . 2 2013

Tìm khoảng cách từ điểm M(2;3;1) đến đường thẳng d: x + 2 1 = y - 1 2 = z + 1 - 2

A. 50 2 /3

B. 10 2 /3

C. 200 2 /3

D. 25 2 /3

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

If you want to turn your hobbies into jobs, consider the following experts' suggestions. If you are a helpful person, you can teach others to do what you love. "Teach piano lessons, offer cooking classes, or teach another language if those are your passions. You can do this by teaching through a college or continuing education program, by creating your own classes, or by creating your own webinars or tele-seminar series online", Collamer says.

If you are not interested in teaching, appraise, repair or fix items related to what you love. Most hobbies have "stuff" connected to them, and sometimes, that stuff needs to be fixed by a skilled and knowledgeable person. "You could fix computers, appraise collectibles, repair bicycles, source missing parts for highly unusual items, and so on," Collamer says.

"The next time you find yourself confused as to how to generate income from your hobbies, search out the most successful entrepreneurs in your area of interest and study their business models and revenue streams," Collamer suggests. "Ask yourself: Is their income coming from consulting services, videos, accessories, events, classes or product sales? What is their mix of products and services? What is their pricing strategy?" In doing this, you will discover proven models for monetizing your hobbies, as well as helpful information about how to price your own services and products.

Mufson, who has interests outside of career coaching, says she managed to turn a hobby into a lucrative part- time gig. "I personally turned my hobby of creating gemstone jewellery into a side-line business," she explains. "Jewellery making is an expensive hobby and early on I decided to make it pay for itself. Since then I have developed two online stores and a relationship with a jewellery gallery that sells most of my work."

What is the best title for the passage?

A. Methods of designing and selling jewellery

B. Tips for turning your interests into careers

C. Experts' advice on choosing the best jobs

D. Pros and cons of running a private business