Look at the pattern of squares below. <br> Fill in the missing numbers below. <br> Pattern 1: 1 <br> Pattern 2: 1 + <input type="number" id ="imp3pg248q10a_1" class="lineinput" placeholder="?" /> = <input type="number" id ="imp3pg248q10a_2" class="lineinput" placeholder="?" /> <br> Pattern 3: 1 + <input type="number" id ="imp3pg248q10a_3" class="lineinput" placeholder="?" /> + <input type="number" id ="imp3pg248q10a_4" class="lineinput" placeholder="?" /> = 7