" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
4!*5-4!*2=4!(5-2)=1*2*3*4*3=72
8!*9*10/(8!*3!)=90/6=15
(6!*7*8*9*6!*7)/(6!*6!*6!)=7*8*9*7/(1*2*3*4*5*6)=7*9*7/(3*5*6)=49*3/30=49/10
4!-2*4!=-2
8!*9*10/8!*1*2*3=90/6=15
6!*7*8*9*6!*7/6!*6!*6!=7*8*9*7/6!=7*8*9*7/1*2*3*4*5*6
6!=720
3528/720=4,9