If p → q is true, then ~ q → ~ p is false. always sometimes never

If p → q is true, then ~ q → ~ p is never false.

Step-by-step explanation:

If p → q is true, then we need to check whether the statement ~ q → ~ p is true or false.

Truth table:

p                 q             ~ p             ~ q           p → q            ~ q → ~ p

T                T                F                F                T                T

T                F                F                T                F                F

F                T                T                F               T                T

F                F                T                T               T                T

From the above table it is clear that p → q is true, then ~ q → ~ p is always true.

If p → q is true, then ~ q → ~ p is never false.

whole number data type

step-by-step explanation:

as whole number type represents whole number

like 1, 2 ,3, 4

in other words the whole numbers are those numbers which cannot be written infraction.

since we can take days as a whole number i.e 1 day 2 day and we cannot write 1.2 day hence we will use whole number data type