63 students choose to attend one of three after school activities: football, tennis or running. There are 24 boys.
20 students choose football, of which 12 are girls.
17 students choose tennis.
22 girls choose running.
A student is selected at random.
What is the probability this student chose running?
Give your answer in its simplest form.

the probability of the student chose running is 26 ÷ 63

Step-by-step explanation:

The computation of the probability of the student chose running is shown below:

= (Total students - football selected - tennis selected) ÷ (Total students)

= (63 - 20 - 17) ÷ 63

= 26 ÷ 63

Hence, the probability of the student chose running is 26 ÷ 63

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5