Question

A teacher surveyed her class about their online accounts

Answer 1

Answer:

$\frac{1}{2}$

Step-by-step explanation:

Thinking process:

Let the total set be the combination of all the sets as shown

It means that total items = 7 + 14 + 7 + 2

                                         = 30

But the total number of the subsets = 5 + 7+ 2

                                                            = 14

Therefore the probability  = $\frac{snap chat}{total }$

                                            = $\frac{7}{14}$

                                            = $\frac{1}{2}$