2 thoughts on “Algebra – 21

  1. Sir,

    For Question 12^2021+13^2021+14^2021+15^2021+16^2021+17^2021
    If this entire expression is divisible by 29 then the entire expression must get divided by it’s multiple also.! I am correct?.

    But in the same question given that it’s not multiple of 58

    • Consider 87. It is divisible by 29. Does that make it divisible by 58?

      If a number if divisible by some n, it is divisible by all factors of n not all multiples.

      regards
      J

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