The least common multiple or LCM
The answer to this problem is the letter "A" which is "Multiply by 3, then add 2"
and can be written a N = 3n + 2
At first, we have initial value such n = 1
Then the second value is:
N = 3*1 + 2
N = 5
The third value is:
N = 3*5 + 2
N=17
The next values are:
N = 3*17 + 2
N= 53
The letter "A" is the inductive reasoning to the given sequence.
The US: 300m World: 9b Most accurate: B
300m•20=6b population
B is the most accurate
8: 20
9: 90
I am so sorry if this is wrong. I am not good at this type of things