Answer:
We need to find the relationship between each terms and then we can find the missing term;
1,4,11,26,57,120,_;
let us start with the first two;
3x2+1=7+4=11
7x2+1=15+11=26
15x2+1=31+26=57
31x2+1=63+57=120
63x2+1=127+120=247
We see this pattern and can conclude that the missing term is 247
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Answers & Comments
Answer:
We need to find the relationship between each terms and then we can find the missing term;
1,4,11,26,57,120,_;
let us start with the first two;
3x2+1=7+4=11
7x2+1=15+11=26
15x2+1=31+26=57
31x2+1=63+57=120
63x2+1=127+120=247
We see this pattern and can conclude that the missing term is 247