<span>7 - 9 = 2
9 - 11 = 2
You should see that the series just increases by +2
therefore you can figure out what the last four terms are and then add them up one of the last terms given is 21</span>
Hello
the naswer is real number
have a nice day
Answer:
1 : 8
Step-by-step explanation:
Answer:
22
Step-by-step explanation:
