How to check all radio boxes in a page with js code?

This is the codes for radio box.

<div class="question-answer">
    <label style="margin: 10px;">
        <span class="kt-font-bolder">1</span>
        <br>
        <input name="2" type="radio" label="1" value="1">
    </label>

    <label style="margin: 10px;">
        <span class="kt-font-bolder">2</span>
        <br>
        <input name="2" type="radio" label="2" value="2">
    </label>

    <label style="margin: 10px;">
        <span class="kt-font-bolder">3</span>
        <br>
        <input name="2" type="radio" label="3" value="3">
    </label>

    <label style="margin: 10px;">
        <span class="kt-font-bolder">4</span>
        <br>
        <input name="2" type="radio" label="4" value="4">
    </label>

    <label style="margin: 10px;">
        <span class="kt-font-bolder">5</span>
        <br>
        <input name="2" type="radio" label="5" value="5">
    </label>

    <br>

    <span style="color: rgb(128, 0, 0);"></span>
</div>

There are almost 20 question in a page with same code. How can I check all 3 in radiobox with js code? Can anyone help me, please?