Jawabanmu

2014-08-27T22:29:47+07:00
1x2x3x4x5x6x7
= (1x2) x (3x4) x (5x6) x 7
= (2 x 12) x (20 x 7)
= 24 x 210
= 5040
2014-08-27T22:31:42+07:00
1 x 2 x 3 x 4 x 5 x 6 x 7 = 2 x 3 x 4 x 5 x 6 x 7 = 6 x 4 x 5 x 6 x 7
= 24 x 5 x 6 x 7 = 120 x 6 x 7 = 720 x 7 = 5.040