The next number in the series can be determined by identifying the pattern or rule governing the sequence. In this case, the series appears to be decreasing by a certain amount each time. The difference between each number is 1, 2, 3, and 4 respectively. Following this pattern, the next number would be 16, as it would be 5 less than the previous number in the series.
Chat with our AI personalities
They are: 33 29 25 21 17 13 9 a reduction of 4 each time
The answer is 109. 21 + (1 x 28) = 49 22 + (2 x 28) = 78 25 + (3 x 28) = 109
81
-5
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.