Question

You place the following shapes in a bag: 5 circles,3 triangles,7 squares,5 rectangles.If you reach in the bag,what is the probability you will grab a shape

Answer 1

Really, there is a 100% that you will grab A shape, but if you wanna get technical...

25% for the circles, 15% for triangles, 35% for squares ,and 25% for rectangles.

It's kind of like grading a test.

1 count up the questions (shapes in this case)

5 circles + 3 triangles + 7 squares + 5 rectangles = 20 shapes

Amount correct (Amount of each shape) ÷ How many questions (Shapes)

(circles) 5÷20 = 0.25

(3÷20 = 0.15

7

5

Answer 2

Probability(Circle) =
`(5)/(20) = 0.25`

Probability(Triangle) =
`(3)/(20) = 0.15`

Probability(Squares) =
`(7)/(20) = 0.35`

Probability(Rectangle) =
`(5)/(20) = 0.25`

Explanation:

We put the following items in the bag

5 circles

3 triangles

7 squares

5 rectangles

`Probability = \frac{\text{Favourable number of Outcomes}}{\text{Total number oh Outcomes}}`

Probability of grabbing a shape =
`(20)/(20) = 1` as all the favorable outcome in this case would be all the shapes.

Probability(Circle) =
`(5)/(20) = 0.25`

Probability(Triangle) =
`(3)/(20) = 0.15`

Probability(Squares) =
`(7)/(20) = 0.35`

Probability(Rectangle) =
`(5)/(20) = 0.25`