Thread: middle number

I need help. thansks


The average of 7 different odd numbers is 53. If the smallest number is 45 and the largest is 69, what is the middle number?

i think there is lots of solution but one of the solution maybe: 47,49,51,53,57

I think that solution may be the only one given the restriction of all numbers being odd. If you picked a higher number the average would no longer be 53.

Only one solution; the one given by Johnny.
(x + 45 + 69) / 7 = 53
x = 257 = the sum of the 5 missing numbers.