56 (just the next number, not the number that completes the sequence)
The number which best completes the sequence below is 20 5 30 6 42 7
56
32=99-5=44+1=552=2525-5=2020+1=21212=441
Not sure about "completes" because the sequence continues. The next number is 20 and you can verify that by fitting the following cubic equation: u(n) = 5*(-n3 + 36n2 - 257n + 558)/12 for n = 1, 2, 3, 4, ...
56 (just the next number, not the number that completes the sequence)
56
54
13 20 12
The number which best completes the sequence below is 20 5 30 6 42 7
21 441 22 23 529 506
17 19 20
1, 10, 2, 20, 3, 30, 4, 40, 5, 50, and so on.
56
The nth term is: 5n
32=99-5=44+1=552=2525-5=2020+1=21212=441
Not sure about "completes" because the sequence continues. The next number is 20 and you can verify that by fitting the following cubic equation: u(n) = 5*(-n3 + 36n2 - 257n + 558)/12 for n = 1, 2, 3, 4, ...