There are more than one whole numbers.
If you include 13 and 16, there would be 4 whole numbers, 13, 14, 15, and 16.
If you do not include 13 and 16, there would be 2 whole numbers, 14 and 15.
The whole number between 13 and 17 is 15
sqrt(13) = 3.6... so it lies between 3 and 4.
√144 < √165 < √169 12 < √165 < 13
13
12 and 13
The square root of 190 is approximately 13.78. The two consecutive whole numbers that it lies between are 13 and 14.
The whole number between 13 and 17 is 15
sqrt(13) = 3.6... so it lies between 3 and 4.
√144 < √165 < √169 12 < √165 < 13
13
If the whole number is one of {-13, -1, 1, 13} then the answer is a whole number. Otherwise it is a rational fraction.
12 and 13
A whole number between 10 and 15 is 11, 12, 13, or 14. These numbers are all integers that fall within that range.
13/12 is not a whole number and so you cannot write it as a whole number.
12 and 13
The phrase "6 between 20" can be interpreted as finding the number that is halfway between 6 and 20. To calculate this, you take the average of the two numbers: (6 + 20) / 2 = 13. Therefore, 13 is the number that lies between 6 and 20.
I suspect you are really asking for between which two whole numbers does the square root of 150 lie. The square root of 150 lies between 12 and 13 (mathematically: 12 < √150 < 13).