which number replaces the question mark and completes the puzzle ?
2 + 2 = 4,
3 + 3 = 18,
4 + 4 = 48,
6 + 6= ? Choose the correct choice.
A) 180 B) 190 C) 180 D) 170 E) 160
Solution:   180   2 + 2= 
<gadget id="calculator">2 + 2</gadget>
<output>4</output>
4 {2 * 2 * 1}   3 + 3= 18 {3 * 3 * 2}   4 + 4 = 48 {4 * 4 * 3}   6 + 6 = 180 {6 * 6 * 5}   180nswer 180
<result>A</result>
which number replaces the question mark and completes the puzzle ?
2 + 2 = 4,
3 + 3 = 18,
4 + 4 = 48,
6 + 6= ?