How many perfect squares less than 1000 end with the digit 6? Pick one:
A) 3
B) 4
C) 5
D) 6
E) 7
4:16   6:36   14:196   16:256   24:576   26:676   ANSWER:6
<result>D</result>
How many perfect squares less than 1000 end with the digit 6?