Question Number 148284 by 0731619 last updated on 26/Jul/21

Answered by Olaf_Thorendsen last updated on 26/Jul/21

6!! = 6×4×2 = 48 8!!!!! = 8×3 = 24 9!!!! = 9×5×1 = 45 !4 = 4!((1/(0!))−(1/(1!))+(1/(2!))−(1/(3!))+(1/(4!))) = 9 !5 = 5!((1/(0!))−(1/(1!))+(1/(2!))−(1/(3!))−+(1/(4!))−(1/(5!))) = 44 x = !5×((√(!4+8!!!!!+6!!−16))/(9!!!!)) x = 44×((√(9+24+48−16))/(45)) = ((44)/9)(√((13)/5))

Commented bySozan last updated on 26/Jul/21

msr olaf can you give me name book containd this factorial

Commented byOlaf_Thorendsen last updated on 26/Jul/21

Unfortunately not sir. I am not a mathematician. I use my phone, google and wikipedia.