Each time the difference between the numbers goes up by +1 then down by - 1 alternatively Like so: 2(+7) 9 (-4) 5 (+8) 13 (-3) 10 (+9) 19 (-2) 17 so the next difference would be + 10 = 27
27, 26, 37
You alternate between adding and subtracting
when adding start by adding 7 and increase by 1 each step
when subtracting start with 4 and decrease by one each step
The answer is 485.
It is a sequence of numbers where the next number is calculated by multiplying hte current number by 3 and then adding 2.
(n+1) = 3(n)+2
91. The series is 1^2 = 1; 1^2 + 2^2 = 5; 1^2 + 2^2 + 3^2 = 14; 1^2 + 2^2 + 3^2 + 4^2 = 30; 1^2 + 2^2 + 3^2 + 4^2 + 5^2 = 55; 1^2 + 2^2 + 3^2 + 4^2 + 5^2 + 6^2 = 91
27
56 (just the next number, not the number that completes the sequence)
75The number which best completes the sequence 10 30 15 16 48 24 25 is 75.
56
54
Nn
75
75.
15 30 32 31 62 64 63 126 128
The number which best completes the sequence below is 20 5 30 6 42 7
35
22 30 39
8