If you mean: 1 1 2 3 5 8 13 21 then the next number is 13+21 = 34
13 & 21
The next number will be 13+21 = 34
34 55 89 etc..
5-8-13-21-34-56-90.... The next number is the sum of the two previous numbers. This is the Fibonacci sequence, 1-1-2-3-5-8-13-21-34-56-90 etc
If you mean: 1 1 2 3 5 8 13 21 then the next number is 13+21 = 34
If you mean: 1 2 3 5 8 13 then the next number is 8+13 = 21
2+3=53+5=85+8=1313+21=3333 is the next number in this pattern. This pattern is called a Fibonacci.
13 & 21
The next number will be 13+21 = 34
21 since the difference between each number is as in the order of the given pattern. so you add 13+8=21
34 55 89 etc..
21
5-8-13-21-34-56-90.... The next number is the sum of the two previous numbers. This is the Fibonacci sequence, 1-1-2-3-5-8-13-21-34-56-90 etc
24, they are going up in 3's, 13, 16, 19 and 18, 21 so next number is 24.
the next number is 21 because it is adding the last number stated.
The problem is finding the next term 7 9 13 21 37 69 133 261......... nth the first number aka the N1 = 7, N2 = 9, N3= 13,....... N7= 133,........Nth The first number 7 +2 = 9, which is the second number NOTE: 21=2 the second number 9 + 4 = 13 NOTE: 22=4 the third 13 + 8 = 21 NOTE: 23=8 the fourth 21 +16 = 37 NOTE: 24=16 So, the pattern is Nm+2m= the next number in the pattern Nth = Nth-1+2th-1 By: Rodney T. Anderson