1,3,9,27,81, ___, ____
Pattern: the next number is 3 times the previous number.
3 (81) = 243 (6th number/term)
3 (243) = 729 (7th number/term)
Do the same to get the 12th number. (This is not arithmetic sequence, where the difference is common between any two consecutive numbers in a sequence).
You can do it :-)
160, 80, 40, 20, 10, ___, ____.
Pattern: The next number is half (1/2) of the previous number/term
1/2(10) = 5 (6th number/term)
1/2 (5) = 2[tex] \frac{1}{2} [/tex] or 2.5 (7th number/term)
