Find the next number in the series 3, 4, 6, 9, 13,?

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18....

procedure...

3,4,6,9,13,......

steps: diffrence between 1st and 2nd no = 1

diffrence between 1st and 2nd no = 2

diffrence between 1st and 2nd no = 3 and so on....

diffrence between 5th no and 4th no = 5

ie; X - 13 = 5

X = 18
Submitted by: Administrator

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