Baby Harshita Reddy (born on December 2, 2002) from Karimnagar, Andhra Pradesh solved 100 mathematical problems including Trigonometry, Limits, Differentiations, Logarithoms, Functions, Matrices, Algebra, Coordinate Geometry, Geometry and Statistics within 47 minutes 12 seconds on December 31, 2011 at SMS Junior College, Siddipet, Andhra Pradesh.