Test yourself

Two questions from a tricky test my friend Randy sent me:

Math test. This must be done in your head only. Do not use paper and pencil or a calculator.

Take 1000 and add 40 to it.
Now add another 1000.
Now add 30.
Add another 1000.
Now add 20.
Now add another 1000.
Now add 10.
What is the total?

(Answer: Did you get 5000? The correct answer is actually 4100. Don't believe it? Check with your calculator.)

Next question:

Mary's father has five daughters:
1. Nana
2. Nene
3. Nini
4. Nono
What is the name of the fifth daughter?

(Answer: Nunu? Nope. Her name is Mary. Read the question again.)