y = 2.5*x^2 - 3.2*x + 1.6 is the equation.
So using that equation, 26 is the incorrect number in the pattern.
I plotted this in excel and fit a 2nd order polynomial trendline and tested to see what numbers worked.
The "pairs" in the sequence are doubles of themselves, e.g (1,2) , (5, 10), (13, 26) but for 29 and 48 neither are doubles or halves of each other. However I'm not sure how you know which of 29 or 48 is the odd one out.
21
26
29 26 35 29 26 30 26 18 29 19 18 19 18 29 26 20 18 32 16 29 24 21 35 30 29 28 37 39 29 26.34 6.17
The next term is 2.The sequence is 2931843657...It is not said if the sequence is 2, 9, 3, 1, 8, 4, 3, 6, 5, 7...or 29, 31, 84, 36, 57...etcThe following interpretation yields one result...Assume the sequence to be 29, 318, 436, 57xSum of numbers in 29 = 11Sum of numbers in 318 = 12Sum of numbers in 436 = 13Hence, Sum of numbers in 57x = 14Hence x = 2The sequence is 29318436572....
29
58
The missing number is 26. The number after 29 is 58.
29
The "pairs" in the sequence are doubles of themselves, e.g (1,2) , (5, 10), (13, 26) but for 29 and 48 neither are doubles or halves of each other. However I'm not sure how you know which of 29 or 48 is the odd one out.
21
48 shoud be 58.
assuming it keeps the same pattern of +10 -5 alternating then the next number would be 26
29
26/29 ~= 89.66%
One possibility: -3
Any ordered set of numbers (and other things) is a sequence. There need not be any discernible pattern to the sequence (Brownian motion, for example), or a pattern which is understood only by the person who defined the sequence. With the last category in mind, every ordered set of numbers is a correct sequence.