Solved by rkdehflk

#	Title	# Solved	Avg. Tries
1000	A+B STANDARD	329,152	2.59
5597	Who have not handed in ?	70,451	1.94
10171	Cats STANDARD	188,901	2.79
10998	A×B STANDARD	236,387	1.30
25304	영수증	82,532	1.80

1