# A brain teaser, see comments?

## 2 Answers

PJ Stein answered

It is Thursday. Angel lied on Wednesday, but told the truth on Thursday. Even though Brenda didn't lie on Wednesday, she is lying on Thursday about Wednesday.

2 People thanked the writer.
Thursday.

Putting the information in a table makes it easier to solve. We’ll use A for Angie, B for Brenda, T for truth and F (false) for lying.

S M T W Th F S
A T F F F T T T
B T T T T F F F
To begin with, there aren’t any days where both of them told the truth and lied the day before, so we know one of them must be lying.

So we have two options, either Angel is lying or Brenda is.

Option 1. Angel is lying.

In order for this to be the case, she needs to be lying today and telling the truth yesterday, so we need two days in a row with T F. And if Brenda is telling the truth, she would need two days with F T. That means we’re looking for two days that have

Angie: T F
Brenda: F T
Option 2. Brenda is lying.

This is just the reverse of the above, so we need to find:

Angie: F T
Brenda: T F
The only day that matches either of the two options is Thursday, and it’s option 2. Brenda is the liar.

Well thought out!!!

Angel lies on Mondays, Tuesdays and Wednesdays but tells the truth the rest of the week.

Brenda lies on Thursdays, Fridays and Saturdays, but tells the truth every other day.

Angel says, “Yesterday I was lying.”

Brenda replies, “So was I.”

What day was it?

thanked the writer.