Posted by Dan on Wednesday, May 15, 2013 at 5:28am.
When Lino submitted an essay for his English class, it was 9 pages long. Lino's essay had errors on pages 2 and 7. If the teacher chose 3 pages uniformly at random to read, then the probability that she didn't read any of the pages with errors can be expressed as a/b where a and b are coprime positive integers. What is the value of a+b?

Math (Probability)  fhj, Wednesday, May 15, 2013 at 7:42am
17
Answer This Question
Related Questions
 Math  Four classmates are comparing the number of pages that they have read in ...
 Math  This needs to be worked backwards. Four classmates are comparing the ...
 Math Fractions  Warren read 1/6 of the pages of a book last Monday. Tuesday he ...
 Math  Ms Lin has 6 hrs to finish a 400 page book. She has already read 150 ...
 maths  before lunch time abigal and teresa each read some pages from different ...
 math  1. What is the experimental probability that the next customer buys any ...
 math  Peter is reading a 103 page book. He has read three pages more than one ...
 math  If the problem says "the sum that shows how many pages Maria read if she ...
 math  It takes Bill 24 minutes to type and spell check 10 pages. Find how many ...
 math word problem(fraction)  Chris read 312 pages of a book at first.he read ...
More Related Questions