Classical math game, use all 4 numbers and + - × / to make 24!

Two rules: (1) Don't cheat. (2) Click "DONE" when you want to quit.

Here is why (hint, for science). 1281977 puzzles have been solved since 2012-10-01.

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Top 20 players of the month (Beat the clock)
Rank Score Player
1 11110 master champion
2 8703 Cornell_Babe_Ruth
3 7841 aloise
4 5913 Byulyi
5 4784 Cornell_Big_Red_V3
6 4598 hitu
7 3432 Cornell_Big_Red_V2
8 3394 Raz
9 2985 Cornell_Big_Red
10 2669 shawn
11 2411 hitu
12 2251 Gus
13 2219 Timothy Yau
14 2147 Raz
15 2027 Gus
16 1945 Raz
17 1937 zongbo-sf
18 1925 Gus
19 1631 Raz
20 1617 Gus





    

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