00:01
So for this problem, we're being asked to identify our first term of an arithmetic sequence, and all we've been given is two random terms.
00:09
I know my 14th term, and i know my 6th term.
00:15
If i were to set this up as a table, it would look something like this.
00:20
So we'll call this my n, and this will be a sub -n.
00:26
So 1, 2, 3, 4, 5, 6, 7, 8, 9.
00:34
10, we'll keep adding it on, 11, 12, 13, and 14.
00:48
Now i know my 14th term is 28, and i know my 6th term is 12.
00:54
So here would be a table version.
00:56
Something interesting that i see is both of these and these are divisible by each other...