# How many numbers are in the natural series between the numbers 13 and 28, 29 and 111

Liam Keller 2022-09-12 Answered
How many numbers are in the natural series between the numbers 13 and 28, 29 and 111
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If you need to search between numbers, then 28-13=15 and then subtract 1 more number (13 is not subtracted), 15-1=14;
the numbers 28 and 13 do not need to be counted, only Between them 14.15 ... 27 are considered.
We write it down like this 28-13-1=14.
111-29-1=81.