I know 5!=1x2x3x4x5=120
But I don't know 3!!=what
please help me
幫我~~~~~~~
2006-12-07 1:39 am
回答 (4)
2006-12-07 1:51 am
3!!
=(3!)!
=(3*2*1)!
=6!
=6*5*4*3*2*1
=720
Finish!
=(3!)!
=(3*2*1)!
=6!
=6*5*4*3*2*1
=720
Finish!
2006-12-07 1:45 am
3!!
=(3!)!
=6!
=720
=(3!)!
=6!
=720
2006-12-07 1:43 am
3!!=(3!)!=6!=720
2006-12-07 1:42 am
3!!
=(3!)!
=(3x2x1)!
=6!
=6x5x4x3x2x1
=720
=(3!)!
=(3x2x1)!
=6!
=6x5x4x3x2x1
=720
收錄日期: 2021-04-12 23:00:46
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