Question Number 101183 by PengagumRahasiamu last updated on 01/Jul/20

Answered by $@y@m last updated on 01/Jul/20

{1,2,3,4.....}=Natural numbers {0,1,2,3,4.....}=Whole numbers

Commented by1549442205 last updated on 01/Jul/20

As I known ,by new definition set of natural numbers insists of {0,1,2,3,...}and is denoted by symbol N,the set of numbers {1,2,3,...} is denoted by N^∗ N^∗ =N−{0}

Commented byRasheed.Sindhi last updated on 01/Jul/20

In some books however the set {0,1,2,3,4.....} is referred as Natural numbers.

Commented by$@y@m last updated on 01/Jul/20

Agree.

Commented byMJS last updated on 01/Jul/20

that′s true. long time ago we wrote N for {1, 2, 3, ...} and N_0 for {0, 1, 2, 3, ...} with N_0 =N∪{0} so in older books you will still find this now we use N^★ and N with N^★ =N\{0}

Commented byRasheed.Sindhi last updated on 01/Jul/20

First numbers ever used by humans were 1,2,3,... So in a sense these are ′natural′.