Factorial Trick!!

[@syedali9914]

Absolutely beautiful !

[@Mathsandolympiad]

@@syedali9914 thank you so much for your appreciation! Do share with your friends and family!

[@PrithwirajSen-nj6qq]

Sir, we may not take much time (x^2 -3x)! =15*3!*8! =3*5*1*2*3*8! =10*9*8!=10! Hence x ^2 -3x=10 Now we know according to factorial conception and from the equation we may say x^2 -3x >0 or x ^2>3x or x >3 Take x =4 then x ^2 -3x =16-12=4 Take x =5 then x ^2 -3x=25-15=10 Hence x =5

[@Mathsandolympiad]

Thanks for watching!

[@PrithwirajSen-nj6qq]

@@Mathsandolympiad Thanks a lot.