数学
规定:=1*2*3*4*……*(A-1)*A 求(2!+3!/5!这么难的数学题我不会,

2019-04-14

规定:=1*2*3*4*……*(A-1)*A 求(2!+3!/5!这么难的数学题我不会,
优质解答
(2!+3!)!/5!
=(1*2+1*2*3)!/5!
=(2+6)!/5!
=8!/5!
=1*2*3*4*5*6*7*8/1*2*3*4*5
=6*7*8
=336
(2!+3!)!/5!
=(1*2+1*2*3)!/5!
=(2+6)!/5!
=8!/5!
=1*2*3*4*5*6*7*8/1*2*3*4*5
=6*7*8
=336
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