The following are the last 10 run scores Colin got in cricket:
18, 12, 6, 1, 21, 10, 21, 18, 20, 7
a) Work out Colin's mean score.
b) Colin plays cricket again on Sunday. He gets 9 runs.
What is his new mean score?
Give your answers as decimals.
a)
b)

A) 13.4

B) 13

Step-by-step explanation:

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.