In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.

Article: My wife and I have always been friendly with the clerks at the local convenience store. I don't think many people appreciate what a difficult job these folks have. They work for a little over minimum wage and I often wonder how they make ends meet. One of the clerks, Charlie, was always wearing his glasses but he didn't one day. I asked him about it and he said they'd been out of order and that he couldn't afford a new pair. His family needed money. It was obvious that he was having a difficult time. We wanted to help him, so we turned to our own eye doctor for assistance with a plan. We had his secretary contact him, asking him to come in for an eye exam for free. We told the doctor to let him order whatever glasses he wanted and that we would pay for them. Although Charlie questioned what was going on, the doctor just told him that someone had offered the money for his new glasses. When we went in to pay the bill, the doctor told us he was so touched by our idea that he _ the exam fee and only charged us for half the price of the glasses! It was so wonderful to see Charlie in her new glasses and he enjoyed telling all the regular customers how the gift came about. I'm sure that upon hearing her story, ideas of kindness may have emerged in the minds of many.
Answer: His old glasses were broken.
Why didn't the clerk Charlie wear glasses one day?

Article: NOT all math skills are learned in the classroom. Some of them come naturally. Consider the split-second calculations you make when you estimate the number of empty seats on the school bus or the number of cookies in a cookie jar. These estimates can often be done without counting. That's because humans are born with the ability to closely guess the number of items in a group. Researchers call this ability a person's "number sense". To see how a person's inborn number sense might be linked to mathematical performance in the classroom, psychologist Justin Halberda and his colleagues from Johns Hopkins University in prefix = st1 /Baltimore,USran some tests. The scientists asked 64 14-year-olds to look at images of yellow and blue dots that flashed on a computer screen for a fraction of a second. Each image contained between 10 and 32 dots that varied in size. Some images contained twice as many blue dots as yellow dots. In other images, however, the number of blue and yellow dots was nearly equal. For each image, the students were asked to estimate which color1 had more dots. The scientists found a wide variation in how well students could pick the color1 with the most dots. The scientists then looked at the students' math scores dating back to kindergarten. Children that performed best in the image test also scored the highest in standard math tests. The same finding held true at the other end of the spectrum . Students who didn't score well on the image test received lower math scores. The study was the first to show a link between a person's inborn number sense and his or her achievement in formal math training. Does this connection mean that one cannot be good in math if they have a weak number sense? Or that having a strong number sense is a guarantee for good grades in math? The answers are not clear. While scientists continue looking at the possible links between a person's number sense and math achievement, one thing is certain: Doing lots of math homework will _ your chances of success.
Answer: Those who have a strong number sense are sure to do well in math.
Which of the following is not true according to the passage?

Article: On the whole, it's not something we parents shout about, but one in four of us does it. Hiring private tutors for our children is now widespread. "It's expensive, but worth it," says Ashan Sabri, whose daughter Zarreen, is having tuition in biology and chemistry in preparation for A-levels this summer. "My husband and I tried to tutor her at home, but we found all our knowledge was out of date and we were only confusing Zarreen. We also tried a group revision course but all the children were sitting in a room for different kinds of exams. On the whole, we think one-to-one tuition works best." The real reason is: does tutoring do any good? "It's not the _ ," says Professor Judith Ireson, author of a 2005 Institute of Education report on the subject. "It's still up to the child to do the learning. If he or she isn't interested, sending them to a private tutor won't do any good. However, we did find that students who had private tuition in mathematics during the two years before GCSE achieved on average just under half a grade higher than students who did not have a tutor." In which case, surely it's time to break open the champagne? Not necessarily, says Elaine Tyrrell, head of The Rowans School, Wimbledon, a preparation school which regularly gets children into the best private schools. "While we recommend private tutoring for a few children whose first language isn't English, we don't encourage it for the others. With the level of education they get here, children really ought to be able to pass the entrance exams without any extra teaching. And our worry is that they might just get used to getting help from last-minute tutoring, but, once they actually get to that school, they won't be able to cope." But Mylene Curtis, owner of Fleet Tutors, one of the biggest tutoring agencies in the country, holds a different view. "In some respects, the hurdles children have to leap in order to get into these schools are set at a higher level than the reality," says Curtis. "We often find that, once a child has got into a school, the standard of work isn't as high as was feared. The trick is to do well enough in the exam to win a place."
Answer: It is effective because it doesn't focus on specific exams.
What does Ashan Sabri think of the group revision course?