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Complete the series 1, 5, 13, 25, 41, ?

+1 vote
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Complete the series 1, 5, 13, 25, 41, ?

posted Jul 1, 2018 by Hanifa Mammadov

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1 Answer

+1 vote
 
Best answer

61
.
1
+ 4 = 5
+ 8 = 13
+ 12 = 25
+ 16 = 41
+ 20 = 61

answer Jul 1, 2018 by Jcm
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