NET DO EDU

Topic Dan chooses a password for his email consisting of 6 different double characters, in which, the first 2 characters are 2 letters in the table of 26 lowercase letters,…

Topic Class 10A has 30 students. The homeroom teacher wants to choose a class committee consisting of 3 members: 1 class president, 1 academic assistant class, and 1 literary assistant…

Topic Nam goes to the store to buy 2 type A chairs. At the store, there are 20 blue A-type chairs and 15 red A-type chairs. How many ways can…

Topic Expand the following expressions: a) \({(x – 2y)^4}\) b) \({( – 3x – y)^5}\) Solution method – See details a) Apply the expansion formula: \({(a – b)^4} = {a^4}…

Topic A group of 8 students consists of 4 girls and 4 boys. How many ways are there to arrange students in groups? a) In a vertical line? b) In…

Select the sentence to see the solution faster Let's Talk! Listening > a – b Reading > a – b – c Writing Let's Talk! In pairs: What environmental problems…

Select sentences to see the solution faster. Listening > a - b Reading > a - b - c Writing > a - b Speaking > a - b Listening…