Chapter 14
Numbers with many repeating
digits
1 A quick multiplication
2 The repunits
3 Squares of repdigits
4 Sorted numbers with sorted squares
Appendix: Factorization of 10 n+1forn≤ 50
Exercise
ann
(Ann)
#1
1 A quick multiplication
2 The repunits
3 Squares of repdigits
4 Sorted numbers with sorted squares
Appendix: Factorization of 10 n+1forn≤ 50
Exercise