1. 16
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  2. 1

    TBH counting has been a great difficulty for me whether it is 0 or even 1.

    c)      2 ≤ i ≤ 12
    

    would pretty much force me to use fingers.

    1. 1

      That’s actually the easiest: (upper - lower) + 1. In your example: (12 - 2) + 1 = 11.

      1. 1

        Yup. Off by one errors have a way of screwing your head I guess :)