How to print :1;11;111;1111;11111

Answer 1

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Answer 2

0*10+1 = 1
1*10+1 = 11
11*10+1 = 111
111*10+1 = 1111
1111*10+1 = 11111 : Hints

Answer 3

how to solve

Answer 4

0*10+1 = 1
1*10+1 = 11
11*10+1 = 111
111*10+1 = 1111
1111*10+1 = 11111 : Hints