78.
Fit the quartic polynomial
t(n) = (7n4 - 66n3 + 221n2 - 186n + 216)/24 for n = 1, 2, 3, ...
6 is.
24, they are going up in 3's, 13, 16, 19 and 18, 21 so next number is 24.
Every next number is increased by 5. The next number in the sequence is 23.
18
To determine the pattern in the series 13, 18, 16, 21, 19, we can observe that there are alternating increases and decreases by 5 and 3, respectively. Starting with 13, we add 5 to get 18, then subtract 2 to get 16, add 5 to get 21, and finally subtract 2 to get 19. Following this pattern, the next number would involve adding 5 to 19, resulting in 24.
The next number is 116.
18 b/c the pattern is +1,+2,+3...
21
6 is.
24, they are going up in 3's, 13, 16, 19 and 18, 21 so next number is 24.
1 2 3 4 .12 & .13 & .15 & .18 & .22
The pattern appears to be: subtract 6, add 17, subtract 14, add 9, subtract 7. Following this pattern, the next number should be obtained by adding 3 to the last number in the sequence, which is 6. Therefore, the next number in the sequence is 9.
The nest number in the sequence is 18. Note that the difference between each number and the next number in the sequence follows the simple sequence of 1,2,3,4. Obviously the next in the sequence of increases is 5, so 13+5=18.
24
18
18
Every next number is increased by 5. The next number in the sequence is 23.