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3/10 Number series

Which number follows? 13, 57, 911, 1315, 1719, ?

This is a progression of odd numbers.

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Comments (9)

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watsays...

It was so easy it was hard ????

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game of intelligencesays...

The difference between each number is 4. So the answer is 2123.

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fesd20says...

1357911131517192123

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MONAZsays...

13 ,57,911,1315,1719,2123

1(3),5(7) =THE DIFF BETWEEN EACH NUMBER IS 4 ..1-5=4 ,3-7=4

9(11),13(15)=9-13=4 , 11-15=4 , DIFF IS 4

17(19),21(23) =17-21=4 , 19-23=4 , DIFF =4

SO ANSWER IS 2123

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Mr. Potatosays...

When you solve all your putting together is odd numbers because 1719 = 17-19 which means the next odd numbers are 21-23 so the answer is 2123

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