4
The number which best completes the sequence below is:1 1 3 2 4 6 5 25 ?
1
1 1 3 2 4 6 5 25 25 27 26
x = 1. These are probably the triangular numbers. 1 1+2 = 3 1+2+3 = 6 1+2+3+4 = 10 etc.
7
27
2 6 3 8 6 12 2 6 3 8 6 12
26
15,30,32,31,62,64,63..... (*2,+2,-1)
1 + 1 = 2 2 * 2 = 4 4 - 1 = 3 3 + 3 = 6 6 + 2 = 8 8 - 1 = 7 so you just repeat that .. meaning that the next number is 15
1 -1+2=1+4-2=3+5-6=2+7-5=4+9-7=6+11-... 50 is your best answer
Nothing "completes" the sequence because it goes on forever - without end.