How can I check if cells contain one of several values and change another cell if those columns all contain either value

Question

I have four columns with cells that can have values A or B and I want to change the value of a fifth cell if columns contain either value. Here is an example.

If I , K , and O all contain the value A or B I want column P to say TRUE

If I , M , and O all contain the value A or B I want column P to say TRUE

If K , M , and O all contain the value A or B I want column P to say TRUE

To populate column P , column O always needs to have a value of A or B, and two of the three columns IK and M have to have either value "A" or "B".

Here is a formula a thought would work, but I cannot figure out how to check if a cell equals one of two values. For example: I2="A" OR "B", K2="A" OR "B", O2="A" OR "B"

=IF(AND(I2="A", K2="A", O2="A"),"TRUE","")

I also tried changing the values A and B to digits 1 and 2 , and adding them up, but it didn't seem to work properly because i could reach the sum of 3 with only two columns. I apologize if I am not explaining this properly..

=IF(AND(K1+M1>=2,N1>=85),"TRUE",IF(AND(I1+M1=2,N1>=85),"TRUE",IF(AND(K1+I1=2,N1>=85),"TRUE","")))

Answer 1

There are number of way to do it. My solution is to use COUNTIF, assuming that neither "A" or "B" would never appear in column J,L,N.

 =AND(COUNTIF(I2:M2,"A")+COUNTIF(I2:M2,"B")>1, OR(O2="A", O2="B"))