Sandeep Jindal Jun 30th, 2005 Here it is a series with difference 2,3,4,5...... So now the next number is 18 because the difference is 5 now which is to be add in its preceding number.

## Consider the following series:4, 6, 9, 13, ____ What comes next?A. 15B. 16C. 17D. 18

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