 possible? How many different unordered sets (combinations)?</p>
                    <div class="interactive-wrapper">
                        <label class="radio-inline">Permutation
                            <input type="radio" name="radioComb" checked="checked" value=false>
                            <span class="checkmark"></span>
                        </label>
                        <label class="radio-inline">Combination
                            <input type="radio" name="radioComb" value=true>