Math1089

Mathematics for All

Towards Math

  • 11 is divisible by 11
  • 111 is not divisible by 11
  • 1111 is divisible by 11
  • 11111 is not divisible by 11
  • 111111 is divisible by 11
  • 1111111 is not divisible by 11
  • 11111111 is divisible by 11
  • 111111111 is not divisible by 11

…                     …                     …

As an easy exercise, show that in the sequence 11, 111, 1111, 11111, . . . , first, third, . . . , etc. terms are divisible by 11 and second, fourth, . . . , etc. terms are not divisible by 11.

Pages: Page 1, Page 2, Page 3, Page 4, Page 5, Page 6, Page 7, Page 8, Page 9, Page 10, Page 11, Page 12, Page 13, Page 14, Page 15, Page 16, Page 17, Page 18, Page 19, Page 20, Page 21, Page 22, Page 23

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