How to get 24 with 3.5.7.8's playing cards is expressed by comprehensive formula.

Hello! Use 3, 5, 7 and 8 to calculate 24 points, and * * has 30 algorithms.

﹙7×5﹚-﹙3+8﹚

8+[﹙7×3﹚-5]

3-[7×﹙5-8﹚]

[7×﹙8-5﹚]+3

3+[﹙8-5﹚×7]

﹙7×3﹚-﹙5-8﹚

﹙5×7﹚-﹙3+8﹚

﹙8-5﹚+﹙3×7﹚

3-[﹙5-8﹚×7]

8+[﹙3×7﹚-5]

[﹙7×3﹚-5]+8

[﹙8-5﹚×7]+3

﹙7×3﹚+﹙8-5﹚

[﹙3×7﹚-5]+8

[﹙7×5﹚-8]-3

[﹙7×5﹚-3]-8

﹙7×5﹚-﹙8+3﹚

﹙5×7﹚-﹙8+3﹚

[8+﹙3×7﹚]-5

﹙3×7﹚-﹙5-8﹚

8-[5-﹙3×7﹚]

[﹙7×3﹚+8]-5

[8+﹙7×3﹚]-5

3+[7×﹙8-5﹚]

[﹙5×7﹚-8]-3

﹙8-5﹚+﹙7×3﹚

﹙3×7﹚+﹙8-5﹚

[﹙5×7﹚-3]-8

8-[5-﹙7×3﹚]

[﹙3×7﹚+8]-5