-57
The first two numbers in the series has a difference of 89. The next two numbers (209, 129) has a difference of 80. The next two (129,58) has a difference of 71. As you can see the differences change by 9, so the next two numbers in the series (58, -4) has a difference of 62. Following this pattern, the next two numbers in the series will have a difference of 53. So the next number in this series will be (-4-53 = -57).
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.
The next number in the series 1 2 4 8 10 20 22 is
it is 31818 - 8 = 1010 - 4 = 66 - 2 = 44 - 1 = 3
20
11 comes next.
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.
The next number in the series 1 2 4 8 10 20 22 is
it is 31818 - 8 = 1010 - 4 = 66 - 2 = 44 - 1 = 3
10
The next number in the series 4, 12, 6, 12, 36, 18, 36
The difference between one number and the next in the sequence is decreasing by 9 each time. Therefore, the difference between -4 and the next number will be equal to 62 - 9 = 53. The next number is therefore equal to -4 - 53 = -57.
The next number in the series 4-12-6-12-36-18-36.. is 108.
4
256 256
20
16
11 comes next.