Which functions return a logical value (true or false)?
i
and
functions return a logical value (true or false),

AND Returns TRUE if all of the arguments evaluate to TRUE.=AND(A2>=10, B2<5)

OR Returns TRUE if any argument evaluates to TRUE.=OR(A2>=10, B2<5)

XOR Returns a logical Exclusive Or of all arguments.=XOR(A2>=10, B2<5)

     2. I and  functions return a logical value?

TRUE

The IF function can perform a logical test and return one value for a TRUE result, and another for a FALSE .

As explained above the AND function return a logical value