There are 9 counters in a bag.

7 of the counters are green.

2 of the counters are blue.

Ria takes a random two counters from the bag.

Work out the probability that Ria takes one counter of each colour.

You must show your working.

A previous study claims that 75% of all students graduate on time. You believe the percentage is lower than that. In a random sample of 200 students, 142 will graduate on time. At the significance level. 05, what conclusion do you draw?

Given: x - 5 > - 2. Choose the solution set. A) x B) x R, x > - 3 C) x R, x > 3 D) x

Do all 6-digit numbers have 6 addends in their expanded form? Explain

Pyramid A has a square base with side lengths of 6 meters, and 4 triangular sides with a base of 6 meters and height of 7 meters. Pyramid B has a rectangular base with length of 6 meters and height of 4 meters, and 4 triangular sides.

A hiker begins on top of a mountain that stands 12,500 feet above sea level. He walks down to the valley that is 250 feet below sea level. What is the difference in elevation between the mountain top and the valley?

What is tge area of wall space that is not covered by chalkboard paint

People who often attend cultural activities, such as movies, sports events and concerts, are more likely than their less cultured cousins to survive the next eight to nine years, even when education and income are taken into account, according to a

By the interior angles theorem, if angle a is 25 degrees and angle b is greater than 51 degrees but less than 57 degrees what are the possible measurements for angle c

The square of a positive number decreased by twice the number is 48. Find the number

A beverage manufacturer performs a taste-test and discovers that people like their fizzy beverages best when the radius of the bubbles is about 0.3 mm. According to the formula below, what would be the volume of one of these bubbles?