(2n-1)(-1)n
[ 25 - 6n ] is.
14+9n
It is: 5n+3 and so the next term is 28
The 'n'th term is [ 13 + 5n ].
It is: 2n+9
The nth term is: 2n+7 and so the next number will be 19
2n + 1
It is 4n-13 and so the next number will be 11
The nth term is 2n+5 and so the next number is 17
The sequence is simply achieved by adding 2 to each value9+2=1111+2=1313+2=1515+2=1717+2=1919+2=21so the nth term can be calculatedThe value of the nth term = the value of (nth-1 term) +2.
nth term = 5 +8n
The nth term is: 5-6n
Un = 4n - 13.
The first differences are 5, 7, 9, 11, 13 and the second differences are 2,2,2,2 so the formula for the nth term is a quadratic. tn = n2 + 2n - 2 (n = 1,2,3,...)
The nth term is 3n+7 and so the next number will be 22
The nth term is: 3n+1 and so the next number will be 16