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static int CountLeapYears2(int minYear, int maxYear)
{
    // do the basic math up here so we don't clutter the final expression
    int years   = (maxYear - minYear);

    // A leap year is evenly divisible by 4, and those that are divisible by 100 AND 400. 
    // This is why I use 0.03 to find the number of periods to subtract from the number 
    // of years being evaluated.
    int periods = (int)(years * 0.03);

    int count   = (int)((years - (years * 0.03)) * 0.25);
    return count;
}

static int CountLeapYears1(int minYear, int maxYear)
{
    int count = 0;
    for (int i = minYear; i <= maxYear; i++)
    {
        if (DateTime.IsLeapYear(i))
        {
            count++;
        }
    }
    return count;
}

Quote:

The real scandal of Tumblr isn’t that it’s now worth a fraction of its former selling price. The scandal is that Tumblr was ever valued so highly at all. Having a very popular product and only the vaguest idea how to make money on it does not, it turns out, a world-changing business model make.

CNN[^]:

When Jupiter was still forming 4.5 billion years ago, something giant likely crashed into the planet and disrupted the process, according to a new study.