The mean of three numbers is 40. All the three numbers are different natural numbers. If the lowest number is 19. What could be the highest possible number of the remaining numbers?

72 is the answer to this problem

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

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