Question 1140574
<br>
I will assume the second number is in fact 77 and not the square root of 77....<br>
So the smallest integer in the set is the smallest integer greater than the square root of 19, which is 5.<br>
But the statement of the problem doesn't make it clear whether the last number in the set is 77 or 76.<br>
And of course that ambiguity goes away if the second number really is the square root of 77.<br>
In summary, the statement of the problem is sufficiently unclear that finding the solution is not possible.<br>
Re-post with a precise definition of the problem.