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9 votes
one way is this to getting answer as $725$ bcz their diffrence is each time double

and other way is $12\times 2+11=35$

 $35\times 2+11=81$

 $81\times 2+11=173$

 so mul by $2$ and add $11$ and lastly we do $357\times 2+11= 725$
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