What number should appear next in this sequence? 1 ; 3 ; 4 ; 13 ; 53 ; 690 ; ?

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What number should appear next in this sequence? 1 ; 3 ; 4 ; 13 ; 53 ; 690 ; ?

posted Jan 13, 2017 by Ujjwal Mehra

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2 Answers

36571
Multiply the two previous numbers and add one.
i.e. 53*690+1=36571.

answer Jan 16, 2017 by Rahul Chandel

great!!! :)

commented Jan 17, 2017 by Anhthu Cao

690+690x13+1= 9661
Ans: 9661

answer Jan 14, 2017 by Anhthu Cao

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