How do you make 19 out of four fours?

Answer by  ProfStochastic (70)

At first this question seems impossible, but there is an answer. Factorials are needed, where 4! = 4*3*2*1 = 24. Since 4! is greater 19 by 5 we heed to use the other three 4's to make 5 which is just 4+(4/4). So 4!-(4+(4/4)=24-5=19.

Answer by  Kman23 (12)

4! - 4 - (4/4) 4! is 4 factorial. This is equal to 4 x 3 x 2 x 1 = 24 You take the 24 and subtract 4 to get 20 4/4 is equal to 1. Subtract this from 20 and you get 19!

Answer by  VB (361)

There may be more than one answer, but one of the answers if factorials (!) are allowed is: 19=4! - 4 - 4/4 Definition of a factorial: n! = n (n-1) (n-2) (n-3) ... (3) (2) (1) Example: 5! = 5 (4) (3) (2) (1) = 120 Example: 3! = 3 (2) (1) = 6