डेलीगेट और लैम्ब्डा

using System;

class Program
{
    static int Apply(int left, int right, Func<int, int, int> operation)
        => operation(left, right);

    static void Main()
    {
        int result = Apply(6, 7, (left, right) => left * right);
        Console.WriteLine(result);
    }
}