Show:
easy
medium
hard
crazy hard
impossible
100

2 x 8 x 1

What is 16

100

6 x 9

What is 54

100

8 x 60

What is 480

100

12 x 8

What is 96

100

8 x 1 x 9 

What is 72

200

4 x 4

What is 16

200

7 x 9

What is 63

200

9 x 80

What is 720

200

6 x 15

What is 90

200

5 x 2 x 3

What is 30

300

6 x 6

What is 36

300

4 x 9

What is 36

300

5 x 15

What is 75

300

2 x 3 x 4

What is 24

300

4 x 5 x 3

What is 60

400

7 x 6

What is 42

400

11 x 9

What is 99

400

2 x  14

What is 28

400

9 x 12

What is 108

400

3 x 4 x 2

What is 24

500

2 x 10 x 3

What is 60

500

5 x 13

What is 65

500

2 x 15

What is 30

500

7 x 14

What is 98

500

10 x 2 x 5

What is 20