1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9
= 362880
k mình nha
thanks nhìu
1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9 = 362880
k mình nha ,mình k lại
\(1\cdot2\cdot3\cdot4\cdot5\cdot6\cdot7\cdot8\cdot9=\left(1\cdot9\right)\left(2\cdot8\right)\left(3\cdot7\right)\left(4\cdot6\right)\cdot5\)
\(=9\cdot16\cdot21\cdot24\cdot5\)
\(=362880\)
1 x 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9
= 2 x 3 x 4 x 5 x 6 x 7 x 8 x 9
= 6 x 4 x 5 x 6 x 7x 8x 9
= 24 x 5 x 6 x 7 x 8 x 9
= 120 x 6 x 7 x 8 x 9
= 720 x 7 x 8 x 9
= 5040 x 8 x 9
= 40320 x 9
= 362880
