Abox contains red, blue, green, purple, and yellow crayons such that the probability of drawing a purple crayon is 3/7.

Option C.

Step-by-step explanation:

It is given that a box contains red, blue, green, purple, and yellow crayons such that the probability of drawing a purple crayon is 3/7.

We draw two crayons randomly such that both draws are independent.

Let X be a random variable that assigns the number of purple crayons to each outcome.

We need to find the range of X.

If no purple crayon is selected, then X=0

If 1 purple crayon is selected, then X=1

If 2 purple crayons are selected, then X=2

The range of X is {0,1,2}.

Therefore, the correct option is C.

answer: do we write it

step-by-step explanation:

we need to divide the number of toy dinosaurs, 156, by the number of brothers, 4:

in order to estimate, we can use compatible numbers:

156 ÷ 4

  ↓

160   ÷ 4 = 40        

the correct answer is a).