Hi ,
There is no error ; this is the pitfall of using TRUNC.
TRUNC truncates any decimal portion of a number ; what you have as a result of the formula H6 * 24 is the number 3.99999999994179
Truncating this results in 3.
Never use TRUNC when you can easily use ROUND or any of its variants.
If at all you wish to truncate , then use it as follows :
=TRUNC(H6 * 24 + 0.1)
will result in a higher number as long as the decimal portion is between 0.9 and 0.999999 , and will result in a lower number in all other cases.
By replacing the 0.1 constant with any other constant , say 0.4 , you can decide that all numbers where the decimal portion is between 0.6 and 0.999999 will result in the higher number being output ; for all other decimal portions , the lower number will be output.
Narayan