Madhukar Daftary, a sexagenarian from Vadodara, is a leader in his own right. The retired chemical engineer spends four hours every day solving maths and physics problems posted online by people who usually want 'urgent homework help'. After having meticulously tackled over 8,296 questions in two years, the silver-haired answer guru is India's 'top contributor' in the mathematics section of 'Yahoo Answers', the community-driven Q & A website.
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