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3 years ago

What is the rule pattern for 9,11,15,23,39,7?

Mathematics

2 answers:

professor190 [17]3 years ago

8 0

Add 2 then multiply by 2

victus00 [196]3 years ago

4 0

$9,11,15,23,39,71

\\9+2\rightarrow11+4\rightarrow15+8\rightarrow23+16\rightarrow39+32=71
\\9+2^1\rightarrow11+2^2\rightarrow15+2^3\rightarrow23+2^4\rightarrow39+2^5\rightarrow71
\\
\\a_n=7+2^n
$

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