Consective numbers are two whole numbers that are one after the other (for example, 1 and 2, 6 and 7, 9 and 10).
The square root of 191 is 13.8.
The two consecutive numbers you are look for are 13 and 14.
13 squared is 169, and 14 squared is 196.
The square root of 191 lies between those two numbers.
Your answer is 13 and 14, I hope this helps!