(CNN) -- Nelson Mandela, anti-apartheid icon, Nobel peace laureate and South Africa's first black president, celebrated his 90th birthday Friday by doing something he had indicated he would not do again -- grant an interview to journalists. 

Mandela sits at the 6th Nelson Mandela Lecture in Soweto, Johannesburg. 

A cheerful-looking Mandela welcomed CNN's Robyn Curnow, along with reporters from two other organizations, into the sitting room of his home in Qunu, a small village in the rolling hills of South Africa's eastern Cape region where he grew up. 

"What day is this?" Mandela joked, pretending not to realize it was his birthday. 

He used a smile to dodge Curnow's first question of what was his favorite memory from his long life. He did say he was very happy to have lived to be 90. 

Mandela credited his longevity to the way he conducted his life. He is known to be disciplined with his diet and exercise. 

Asked if, in hindsight, he wishes he had spent more time with his family, he answered yes. 

"I don't regret it because the things that attracted me were things that pleased my soul." 

Graca Machel, whom he married on his 80th birthday, sat nearby and Mandela was surrounded by grandchildren. Watch what Mandela's grandchildren have to say » 

Mandela then lamented the gap between rich and poor in South Africa. 

"Poverty still grips our people. If you're poor, you're not likely to live for long," he said. Watch CNN's Mandela interview » 

This was Mandela's first meeting with reporters since he announced in 2004 that he would give no more interviews. While he stayed out of the spotlight over the last four years, he has stayed busy with his charitable causes.  QUESTIONS:

Q1:
1. Who celebrated their 90th birthday on Friday?
2. What is the name of the person who turned 90 on Friday?
3. 
Q2:
1. What is Nelson Mandela known for?
2. Nelson Mandela is known for what beliefs?
3. 
Q3:
1. Nelson Mandela is also know for receiving what award?
2. Which award is Nelson Mandela also known for?
3. 
Q4:
1. Did Nelson Mandela hold office?
2. Was Nelson Mandela in office at some point during his life?
3. 
Q5:
1. Which office did Nelson Mandela hold?
2. What is the name of the office that Mandela held?
3. 
Q6:
1. Which group of people did Nelson Mandela allow to sit down with him for the first time in a while?
2. Nelson Mandela allowed which group of people to sit down with him for the first time in a long time?
3. 
Q7:
1. Reporters from how many news channels sat down with Nelson Mandela?
2. Reporters from how many news stations were present?
3. 
Q8:
1. Are any of the reporters named?
2. Is the name of some of the reporters mentioned?
3. 
Q9:
1. Robyn Curnow belongs to which news channel?
2. For which news station does Robyn Curnow work?
3. 
Q10:
1. What is the name of Nelson Mandela's wife?
2. Who is Nelson Mandela married to?
3. 
Q11:
1. When did Graca Machel and Nelson Mandela get married?
2. When did Nelson Mandela marry his wife?
3. 
Q12:
1. How many practices does Nelson Mandela exercise in order to maintain his health?
2. Nelson Mandela's health is maintained thanks to how many practices?
3. 
Q13:
1. Which two practices does Nelson Mandela attribute to maintaining his good health?
2. Nelson Mandela claims that what two practices are responsible for his good health?
3. 
Q14:
1. How old is Nelson Mandela's wife?
2. How many years old is Nelson Mandela's wife?
3. 
Q15:
1. Did Nelson Mandela and his wife have any children?
2. Did any children come out of the relationship between Nelson Mandela and his wife?
3. 
