A message is required in alert when all radio groups are selected

A message is required in alert when all radio groups are selected

I have the following "radio buttons group" in a form, A message is required in alert when all radio groups are selected.
  1. <fieldset style="display: block;"  class="frt">
                                <div class="hd">
                                    <h4>What is your age?</h4>
                                        <div class="form-group">
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>20 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio1" id="radio1" value="20" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>22 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio1" id="radio1" value="22" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>25 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio1" id="radio1" value="25" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <!--end of row-->
                                        </div><!--end of  form-group-->
                                      </div>
                                     
                                      <div class="clearfix"></div>
                                       <div class="hd">
                                        <h4>What is your age?</h4>
                                        <div class="form-group">
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>20 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio2" id="radio2" value="20" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>22 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio2" id="radio2" value="22" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>25 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio2" id="radio2" value="25" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <!--end of row-->
                                        </div><!--end of  form-group-->
                                        </div>
                                       
                                        <div class="hd">
                                        <h4>What is your age?</h4>
                                        <div class="form-group">
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>20 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio3" id="radio3" value="20" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>22 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio3" id="radio3" value="22" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>25 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio3" id="radio3" value="25" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <!--end of row-->
                                            </div><!--end of  form-group-->
                                            </div>
                                       
                                        <div class="hd">
                                        <h4>What is your age?</h4>
                                        <div class="form-group">
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>20 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio4" id="radio4" value="20" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>22 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio4" id="radio4" value="22" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>25 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio4" id="radio4" value="25" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <!--end of row-->
                                        </div><!--end of  form-group-->
                                        </div>
                                       
                                       
                                        <div class="hd">
                                        <h4>What is your age?</h4>
                                        <div class="form-group">
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>20 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio5" id="radio5" value="20" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>22 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio5" id="radio5" value="22" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <div class="col-sm-4">
                                                <div class="input-radio">
                                                    <label>25 Years</label>
                                                    <div class="inner"></div>
                                                    <input type="radio" name="radio5" id="radio5" value="25" />
                                                </div>
                                            </div><!--end of col-sm-4-->
                                            <!--end of row-->
                                        </div><!--end of  form-group-->
                                        </div>
                                      
                                       
                                        <div class="f1-buttons">
                                            <button type="button" class="btn btn-primary">Next</button>
                                        </div><!-- end of f1-buttons-->
                                </fieldset>